The Shenzhou XIII mission    1    (conclude) the technology demonstration phase in the    2    (construct) of China’s Tiangong space station in recent years, according to a senor space official.

After being in orbit for six months, the three crew    3    (member) of the Shenzhou XIII mission departed Tiangong, or Heavenly Palace, and returned to Earth on Saturday morning,    4    (complete) the nation’s longest manned spaceflight.

Major General Zhai Zhigang, Senior Colonel Wang Yapig and Senior Colonel Ye Guang-fu breathed fresh air     5    the first time after their half year space journey when ground recovery personnel opened the hatch of their reenter capsule at 10:03 a.m.

“I am feeling very good. We want to report to the motherland and the people that we have    6    (successful) completed the Shenzhou XIII mission. We thank all the Chinese people for their support and    7    (encourage) .Our gratitude also    8    (go) to all those involved in the Shenzhou XIII mission    9    accompanied us day and night,” Zhai, the mission commander, told China Central Television during a live broadcast.

“It is    10    power and strength of our county that built us the advanced space station. I am proud of my great motherland,” he said.

2 . As I held my father hands one night, I couldn’t help but notice his cases (老茧) and roughness. His hands tell the story of his life as a _______, including all his struggles.

One summer, I remember, a drought (旱灾) hit Ontario, turning it into a _______desert. On one of those hot mornings I was picking sweet corn with my dad to fill the last _______from the grocery store. Fifty dozen was all we needed, which _______took twenty minutes. That morning, however, the process didn’t _______quickly. After forty minutes of aimlessly walking in the field, we_______needed twenty dozen. I was completely frustrated and _______.Dropping the basket heavily, I declared, “If the store wants its last twenty dozen, they can pick it themselves!” Dad_______, “Just think, my little girl, only ten dozen left for each of us and then we’re _______.” Such is Dad—whatever problem he ________, he never gives up.

________, the disastrous effects of the drought were felt all over our country. It was a challenging time for everyone,________Dad remained optimistic. He continued to be ________for other things like good health and food on our plates. Only then did I truly begin to ________Dad and his faith that guided us through the hard times.

Dad, the life________I have learned from you will stay with me forever. You are my father, teacher, friend and, most importantly, my hero.

3 . A lot of misinformation about a disease can sometimes food the Internet and experts call on the public to practise

    1    Before you forward (转发) it on, ask some basic questions about where the information comes from. It’s a big red flag if the source is “a friend of a friend” or “my aunts colleague’s neighbour”.

We recently tacked how a misleading post from someone’s “uncle with a master’s degree”went widely. Some of the details in the post were accurate—some versions, for example, encouraged hand washing to slow the spread of viruses.    2    That was potentially hammful.

Appearances can be misleading. They may possibly pretend to be official accounts and authorities, including some famous news agencies and the government. Screenshots can also be changed to make it look like information that has come from a trusted public organization.    3     If you can’t easily find the information, it might be a trap.

Don’t share if unsure whether it’s true.    4    You might be doing more harm than good. Often we post things into places where we know there are experts like doctors or medical. Think about your preference. Are you sharing something because you know it’s true or just because you agree with it? “We’re more likely to share posts that support our existing beliefs,” says Carl Miller, research director of the Centre of the Analysis of Social Media. It’s when you’re angrily nodding your head that you are easily taken in.    5    

4 . As a popular subject of study among evolutionary ecologists, the three-spined stickleback (三刺鱼) is known for their different shapes, sizes, and behaviors—they can even live in both sea water and fresh water, and under a wide range of temperatures. But what makes that?

The researchers tracked six populations of the fish before and after seasonal changes to their environment, using genome sequencing (基因组测序) . Seasonal changes result in great changes in habitat structure and balance of salt and freshwater, and only those fish able to tolerate these rapid changes survive into the next season.

“These changes probably resemble the habitat shifts experienced by stickleback populations during the past 10,000 years, says Professor Barrett “We hope to gain insight into the genetic changes that may have resulted from natural selection long in the past.”

Remarkably, the researchers discovered the evidence of genetic changes driven by the seasonal shifts in habitats, which mirrored the differences found between long-established freshwater and saltwater populations. “These genetic changes occurred in independent populations over a single season, highlighting just how quickly the effects of natural selection can be detected,” says Professor Barrett, “the findings suggest that we may be able to use the genetic differences to predict how populations may adapt to the environment.”

The research emphasizes the importance of studying species in dynamic environments to gain a better understanding of how natural selection operates. In the further research, they plan to investigate how repeatable the observed genetic changes are, by testing whether they show up year after year. Doing so would demonstrate their ability to reliably forecast the evolutionary future of these populations.

Notice

9 . As summer approaches, many kids and teenagers may find that they have more time in hand. One great way to make use of the extra time is to go on an adventure and travel. Clearly, I am not a naturally adventurous person, but I have found that taking the risk and challenging myself to explore and travel to unfamiliar places can be a very rewarding experience.

Because I am usually quite busy during the school year, most of my travels take place during the summer. Over the past few summers, I have hiked in the Grand Canyon, explored Niagara Falls, and camped out in upstate New York. Although these experiences are varied, they are similar in that they instill (灌输) a sense of appreciation for nature and a more balanced view on life. When I hiked in the Grand Canyon, for example, I was in awe(敬畏) of the geological influences that shaped the canyon.

Adventures, of course, are not limited to hiking. There are many other choices, such as camping, volunteering in a foreign environment and travelling to different countries. In my opinion, adventures are more enjoyable with family or a few friends. There is a sense of bonding that one only gets through spending time together in outdoor adventures. For example, when I was in Boy Scouts, I often went on weekend camping trips with my friends. When I came back from a Boy Scouts camping trip, I often was eager to go outside more and explore the parks and nature around me.

Next fall, I will attend college. In the meantime though, I hope to make the most of my summer to explore and travel. Now, I am planning on hiking and camping out in Maine.

When I visited Maine last fall, I was amazed by how beautiful it was and the tall trees and coasts that exist, and I really hope to enjoy the beauty of nature there this summer.