China has launched the CR450 science and technology innovation project     1     (develop)an even faster train. According to the national plan, a more advanced bullet train, with a top operating speed of 400 kilometers per hour and an     2     (experiment)speed of up to 450 km per hour, the CR450 would soon be revealed.

By the end of 2022, China’s transportation network     3     (grow)to cover more than 6 million kilometers. From 2018 to 2022, China’s transportation sector (部门)saw investments ofl7 trillion yuan in fixed assets(固定资产), officials said at     4     news conference.

By the end of 2022, China’s railway network had covered 155, 000 km, of which 42, 000 km were high-speed railways,     5     (account)for more than two-thirds of the world’s high-speed railways. In addition, China has developed the world’s     6     (large)road network, which covers 5. 35 million kilometers, of which 177, 000 km are freeways. China,     7     also has 128, 000 km of inland waterways and 21, 000 berths (泊位), can accommodate industrial production.

Fifty-three cities have city metro transportation systems, with     8     (they)operations covering a total of 9, 584 km. Nearly all administrative villages, towns and counties have access     9     hardened roads and bus services. Post     10    (office)are established in all towns.

3 . As a parent of grown children, I have come to realize that many things occurred during those child-rearing years that I knew nothing about.

At one gathering, my third child, Shelly, _________talking about her hair. She has always had beautiful hair. She said she had red highlights (挑染的头发) in her hair when she was younger. We believed her because we all_________ that. For this discovery, she brought her hair color to our_________ . Shelly laughed with us at the_________and then said aloud how interesting it was that she hadn’t seen any highlights in many years.

Snickering (窃笑)_________from across the room. We all turned to look at the_______ . My youngest two girls were sharing wide-eyed_________and giggles (傻笑).

“Okay, what is so_________?” I asked them, my look demanding a(n)_________. With laughter, they finally shared the__________of a story that had us all laughing heartily.

From their childhood, two of their good friends often played together at our house. One day, the four girls,__________ in age from seven to ten years at the time, decided to form a__________business. The girls gathered__________things from the surrounding forest to combine, __________to make a new perfume. They boiled pine needles, wild-flowers, and whatever they found in a pot of water. Then they decided to __________the perfume into a shampoo bottle, Shelly’s shampoo bottle. Realizing that the strawberry-colored__________looked different after adding their mixture, they decided to add__________food coloring. They told us how they rushed each morning to Shelly’s shower in order to shake up the bottle and__________the color throughout once again. They were terrified of the discovery.

Shelly’s face whitened with__________and then reddened with embarrassment before softening into humor. “Well,” she said, after a moment, “I guess that__________it.”

4 . About one-tenth of the world’s population suffers from hunger and nearly one in three people face food insecurity, according to recent estimates. Yet behind those striking figures hides another, closely related threat: water insecurity.

In a new 25-country study, researchers report a strong link between water insecurity, a lack of reliable access to sufficient water, and food insecurity. The researchers analyzed data from a nationally representative sample of over 31, 000 people ages 15 and older in 25 low-and middle-income countries across Africa, Latin America and Asia. Overall, about 18% of participants were classified as water insecurity. This ranged from about 15%in Asia to over 34% in sub-Saharan Africa.

The findings, based on data collected for the first time in 2020 by Northwestern University and the Food and Agriculture Organization of the United Nations(FAO), suggest that improving access to water could be key to sustainably and effectively addressing food insecurity in many places.

While the study did not assess the causes of food or water insecurity, researchers said several factors could explain the linkage. For those living in poverty, spending money on water can mean less money available for food. For farmers, water insecurity can mean less water available for growing crops and raising livestock. Time is also an issue: Traveling far from home to collect water shifts the time available to generate income or prepare food.

Based on these findings, researchers suggested food insecurity and water insecurity should be measured and addressed at the same time. This would ensure that insufficient water does not pose an additional barrier to food security and in particular to food utilization (使用), for example, by preventing people from using food provided by food assistance programs because there is no water to prepare it. As such, efforts to improve access to water could also bring benefits for food security.

5 . The passenger who successfully landed a plane after its pilot fell unconscious told about the experience. Darren Harrison was on his way back from a fishing trip in the Bahamas when the pilot told him and the other passenger, a friend of the pilot’s, that he didn’t feel right.

Harrison quickly asked the pilot what needed to be done by the point when the pilot was already unresponsive. Making his way to the front of the plane, he realized that the aircraft was in a nose dive, moving at a very fast rate over the open ocean. “At that point, I knew if I didn’t react, we would die,” said Harrison.

Harrison reached over the pilot’s body and positioned his arms over him to grab the controls, slowly starting to pull back on the stick and turn. He did all this just out of common sense. Harrison said that the first moments before he made any communication with ground controls stood out to him as the scariest part of the whole story.

Barefoot in the front of the plane, he placed the headset that the pilot had been wearing on his head, only to discover the cord (电线)was worn and unplugged. From there, he asked the other passenger for his headset and was able to connect. with air traffic control, who guided him on how to safely land. Once they reached the ground, Harrison said he slowly feathered the brakes as they made it down the runway.

When the aircraft finally came to a stop, Harrison said he thanked the man on the other side of the headset before throwing it on the dash of the plane. He said his strongest prayer was “for the guy in the back” while he prayed for the safety of everything that happened.