Detecting strong X-ray flares (耀斑) beaming from the center of a blackhole is nothing new. But detecting light signals from behind one is a different story. That’s     1     the force of gravity in a blackhole is so severe that nothing that goes in can come out. No scientist has managed     2     (find) light from beyond— until now.

In contrast     3     what their name implies, supermassive (特大质量的) blackholes can be one of the brightest sources of continuous light in the universe. Their     4     (extremely) gravity brings in all kinds of material around them. Little is known about supermassive black hole coronas, so scientists turned to blackhole I Zwicky 1,     5     lies 100 million light years from Earth, to investigate the beams shooting out.

Scientists     6     (detect) smaller X-ray “echoes” around the supermassive blackhole, in addition to the expected flares. The obvious light characteristics of these pulsing beams (脉冲光束) indicated that they were the same X-ray flares, but reflected from the backside,     7     (mean) the supermassive black hole’s gravity must have actually abnormal space-time, thus bending the beams around in a detectable direction by specialized telescopes. The     8     (finding), published in Nature, support a key     9     (predict) from Einstein’s theory of general relativity.

This is the     10     (one) research to confirm what the famous physicist predicted more than half a century ago.

3 . Janelle would be late for work. However, what she ______ in the mirror made her stop. Being a busy college ______ just one year removing from her teenage years, she wasn’t exactly concerned about the ______ of her clothes. But her restaurant boss saw things a little ______. He had recently ______ the staff on the importance of appearance, and had specifically mentioned the need for ______ to wear clean and neat blouses.

As an assistant manager, Janelle thoughts he should set an example for the other ______. But if she stopped to ______ the blouse normally, she would be late. Her boss didn’t ______ anyone to be late for work. So she ______ her iron and set it on low heat. Carefully keeping her blouse away from her ______, she started to iron it while wearing it. It seemed like a logical solution to a(n) ______ problem.

It seemed to be working ______ until Janelle accidentally ironed her neck by mistake. Then it suddenly turned into a really ______ and painful idea. It took more time to treat her burn than it would have taken to iron her blouse ______. And she spent a shift ______ the pain of the burn.

I had the same ______. When I used to clean our yard, I often destroyed its look by using a creative way of ______ wild grass. Then my dad would tell me the way was ______ and said, “There is a right way and a wrong way of doing things. If a thing is worth doing, it is worth doing it right.” There is a reason why something is done in ______ ways. Those old, boring ways work.

4 . A new study suggests lightning strikes that hit Earth after its formation may have unlocked a necessary chemical element to support the beginning of life. Researchers say the lightning may have supplied enough phosphorus (磷) to Earth during the first billion years after the planet was formed. Scientists believe life started on Earth about 3.5 to 4.5 billion years ago.

Phosphorus is an important element for the formation of life. It helps form cell structures and supports DNA, the material present in nearly all living organisms. But on early Earth, phosphorus is believed to have been first locked inside minerals that cannot dissolve in water.

Until now, it was widely believed that meteorites (陨石) that struck Earth were mainly responsible for the presence of “bioavailable” phosphorus. Some meteorites contain a phosphorus mineral called “schreibersite”, a highly reactive mineral that can form organic molecules.

But when lightning strikes the ground, it can create glassy rocks called “fulgurites” by super-heating and sometimes vaporizing rocks on the surface. This process frees the phosphorus locked inside. As a result, these “fulgurites” can contain “schreibersite”, which can be dissolved in water, where life is thought to have formed.

The researchers say levels of phosphorus minerals caused by lightning strikes were found to have been higher about 3.5 billion years ago. The researchers think this was about the age of the earliest-known fossils widely accepted to be those of microorganisms. Scientists believe the earliest bacteria-like organisms were formed in Earth’s early waters. But there is a debate over when this happened and whether it happened in warm and shallow waters or in deeper waters.

New research does not completely cancel the theory that meteorites could have been another source of life-giving phosphorus. Meteor (流星) strikes around the time of the appearance of life are far less than thought a decade ago.

5 . As a student of International Relations and Chinese, I have been living in China for the past three years. Tibet was a region I was eager to travel to but its remoteness and my inability to find the right time to go delayed my journey. After a few e-mails back and forth with my dad in the UK, who doubted my choice, we decided to take a pause in our lives to begin our journey early in the morning of July 3rd.

We started our journey on Saturday morning at the Guangzhou train station. It was a good thing that we had secured a couple of soft seats as we were about to begin the journey. We started the first part of the journey, admiring the mysterious mountains of south China. The next day it changed quite suddenly to the dry landscape of central-west China as we passed through Shaanxi and Gansu Provinces. That evening we arrived in Qinghai Province, where we hoped for the Xining-Lhasa train.

We were greeted on the train with Tibetan yogurt. The following afternoon we arrived in Lhasa. Later that day, we started our journey to the Qomolangma base camp by road from Lhasa. Along the way we stopped to admire the beautiful and large river, the beautiful clouds and huge freshwater lake that is one of the three largest sacred lakes in Tibet. All the beauty contributed to making a picturesque countryside Tibet.

About a week later, we arrived at the Qo olangma basecamp in the afternoon. We were staying in a guesthouse just next to the basecamp and then we headed straight outside to see the wonderful Mt Qomolangma. The tip of the mountain could be seen through clouds, astonishing us with its unbelievable height and wonderful scenery. The clouds cleared away and we watched the sunset over the top of the mountain. Each of us was really impressed by Mt Qomolangma’s magnificence (壮丽) .

6 . Not every kid can be a professional athlete, but they can learn the great life lessons from the following storybooks about sports.

Young Paulo Marcelo Feliciano dreams of becoming a super soccer player, but his little sister, to whom he teaches soccer moves every day, shines after a key player’s injury. Soccer Star teaches acceptance and celebrates Brazil’s diverse culture and the hope of the poor for a better future.

Tillie Anderson tore up her fancy lady’s dress and sewed herself a cycling outfit that had both good form and function. The tight-fitting get up allowed her to become a world champion racer when most women were admired for their graceful dancing, and proved long before Lance Armstrong that you didn’t need to be male to rule the cycling world.

Jim Thorpe was a native American who overcame discrimination to become one of America’s best athletes winning gold medals at the 1912 Olympics. He was also all-American and professional football player, and played professional baseball and basketball. So, he deserves to be your kid’s first sport hero.

Not only did Trudy Ederle win 3 Olympic medals at age 17, she was also the first woman to swim across the 20-mile English Channel. And she did it in world-record time, challenging 1920s conventions that expected women to stay at home. The next time your kid says that some classmates of theirs shouldn’t be allowed on their team, tell them to talk to Trudy.