1 . Researchers at the University of California found that_________ (expose) to the cold increases levels of a protein _________helps form brown fat — the type of fat that produces heat and keeps us warm. （所给词的适当形式填空）

2 . Whenever and wherever disasters happen — 9/11 Attacks in New York 14 years ago or the explosion in Tianjin on Wednesday night — it is always the firefighters_________take the lead to run to the very center,_________(save) lives by risking their own. （用适当的词填空）（所给词的适当形式填空）

6 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Feng Boyao and Meng Shuqi, students at No. 37 Middle School in Taiyuan, Shanxi province, spent nearly a year developing a new kind of Braille (布莱叶盲文) reading device and     1     (win) the first prize at a provincial-level youth science and technology competition.

A large number of Braille contact dots have been set up on the device,     2     is 50 centimeters long and 10 cm high. It can make Braille content move across a computer screen via     3     application.

“Education for blind people     4     (be) mainly based on Braille books, but very few Braille books can be found in the marketplace, or they are outdated and cannot meet the needs     5     the blind. Only a small number of people have access to Braille reading devices,     6     they may sell for as much as 10,000 yuan ($1,549) or more,” Feng said.

The cost of     7     (they) device is much lower, so it will be     8     (advantage) for market promotion. In addition, because of its magnetic structure, the content     9     (display) on the device is said to be more accurate than others. Feng and Meng hope the device can help reduce the number of blind people who are in     10     (poor) for lack of education.

7 . 阅读下面材料，在空白处填入适当的内容（不多于1个单词）或括号内单词的正确形式。

During summer vacation, I went on a three-day camping expedition (远足). We had to carry all of our own clothes and food, as well as tents, cooking pots and first aid kits(急救药箱).

On the first day, our instructor taught us how to read maps. It's not too difficult     1     (understand) maps, but walking with a 13-kg backpack under the burning sun     2    (be) not the most ideal situation. Each of us carried two liters of water to drink as well.

On the second day, we had to find our own way to the next campsite. My group set     3     at 9 am full of confidence, but soon found     4    (we) lost on a farm!     5     (luck), each group had a tracker (跟踪器) that allowed our instructors to see     6     we were. We were quickly found and got back on     7     right path. We finally got to camp at 7 pm. Having walked 25 km over 10 hours, my body was aching. The third day was a bit     8     (easy). We successfully made     9     back to the car park where our coach was waiting.

I learned so much from this expedition—not just map reading skills,     10     also teamwork and how to deal with emergency situations. It pushed me to achieve something I never thought I could do and gave me important life skills.

9 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。答案写在题号后的横线上。

Speaking of Post-00s generation, you may think of those young people     1    spend too much money online. However, it's not always true. Although influenced     2    popular culture, the young generation often treats buying more like a process of researching.

Wang Yihan, a high school student, is     3    (typical) such a consumer. Last summer, before she     4    (decide)to buy a Casio watch,she had looked up all the information about the different Casio     5    (watch) on diffrent websites and compared the functions of each model. She thinks researching products is more enjoyable than buying them. She also likes making       6     (she)own journal. She used many old stickers       7    (make)her journal more unique. Besides saving money,she felt much     8     (good)to turn waste into treasure. As     9    lover of Han costumes, she often does research online. Instead of     10    (enjoy)costumes only, she prefers to learn about the culture and history behind them.Indeed, young generation has leart to have independent choices.

10 . 阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

The Chinese idiom is one of the     1     (value) cultural heritages deeply rooted in traditional culture. Each of the     2     (idiom) bears extremely deep meanings, and “taoli mantianxia” is a popular one. It     3     (refer) to a teacher who has taught so many students that they spread across the country like peach and plum trees .

It actually comes from     4     ancient story about Zizhi, an official and     5     (educate) who lived during the Spring and Autumn Period.     6     (lucky), for the political reason Zizhi     7     (drive) to leave his state. Later, he opened a private school, teaching his students     8     (become) a useful person, just like when the peach and plum trees bloom（开花）and bear fruit.

Many of Zizhi’s students went on to different places     9     his words in mind and achieved success.At the same time, they planted many peach and plum trees to show     10     (they) respect for the teacher. Zizhi was pleased when he traveled around the country and saw the planted trees.