1 . 语法填空

Cloning has two major uses. First, gardeners use it to produce large     1     (quantity) of plants for sale. Second, it is valuable for research on new plant species and for medical research on animals. Cloning plants is fairly straightforward, while cloning animals is much     2     (complicated) and difficult. Over the years, many scientists failed in their attempts to clone animals, but their determination and     3     (patient) paid off in 1996 with a breakthrough-the cloning of Dolly the sheep.

2 . 语法填空

After breakfast, I pack my bag and set     1    again. Since I must carry all of my food and supplies with me, my bag weighs about 30 kilograms. If today is anything like yesterday, it will be full of sweat and hard work as I hike over this difficult land to my destination on the other side of the valley. However, I cannot complain.     2    (be) in such a beautiful and wild place makes me feel     3     (bless) to be alive. Here I am, alone under this broad sky, breathing the fresh air, and enjoying this great adventure. What could be better?

3 . 语法填空

Tu Youyou was awarded the Nobel Prize in 2015 for her research,     1     led to the discovery of artemisinin. Artemisinin has saved a large number of lives since it was discovered. After     2     (graduate) from university, Tu Youyou worked at the China Academy of Traditional Chinese Medicine. In 1967, Tu Youyou     3     (choose) as a researcher of a team of scientists with     4     purpose of discovering a new treatment for malaria.

4 . __________ (expose) to freezing weather, courageous tourists and scientists still choose to visit Antarctica. (所给词的适当形式填空)

5 . It was really cold outside, but Jethro stayed indoors ____________ (wrap) in a warm blanket (毯子) and drinking hot chocolate. (所给词的适当形式填空)

6 . Beijing Opera is one of the most ____________ (influence) operas in China, which has a history of more than 200 years. (所给词的适当形式填空)

7 . The medicine has proved somewhat effective, but further testing remains __________ (conduct). (所给词的适当形式填空)

8 . Sales director is a position __________ interaction technique is just as vital as sales competence. (用适当的词填空)

9 . We wouldn’t have called a taxi yesterday if Harold __________ (offer) us a ride home. (所给词的适当形式填空)

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。

Home to the headwaters of the Yangtze, Yellow and Lancang rivers, the Sanjiangyuan area on the Qinghai-Tibet Plateau (高原), is known as “China’s water tower.” It is a     1    (whole) significant plateau wetland ecosystem and serves as     2     unique ecological defense for the country.

Decades ago, serious environmental degradation (恶化) in Sanjiangyuan,     3     was caused by climate change and human activities, resulted in a large number of lakes drying out and wildlife numbers falling sharply. In 2016, the pilot program for the Sanjiangyuan National Park management system     4    (launch). Through painstaking development and innovation, efforts have been made     5    (turn) the park into a symbol of the progress of China’s ecological civilization.

Over the past decade, the ecological environment of the Qinghai-Tibet Plateau     6    (experience) enormous changes. Water conservation in the area has risen     7     11 percent every year, reaching 75 percent mark compared with 64 percent 10 years ago.

The     8    (establish) of the national park has enabled local residents to change from exploiting (开发) nature to becoming its protectors, some of them     9    (serve) as tour guides for visitors from home and abroad.

Today, as people wander on the vast land of Sanjiangyuan, looking at the expansive mountains, glaciers, lakes and pastures,     10     catching sight of wild animals and birds, they cannot help be impressed by the vastness and beauty of nature and its biodiversity (生物多样性).