1 . Desperately, I kept my eyes wide open and tried to seize my brother by ________ arm, once, twice, three times… （用适当的词填空）

2 . ________Internet helps friendships.

A．An

B．A

C．/

D．The

3 . ________ whole process was so smooth that Tang Hongbo was seen playing with the pen during the process of returning to earth. (用适当的词填空)

4 . The Beijing 2022 Olympic Winter Games opening ceremony began at the National Stadium in Beijing on the evening of February 4, 2022. ________ duration of the ceremony was reduced to about 100 minutes because of the cold weather and the COVID-19. (用适当的词填空)

5 . In old age, Mrs. Johnson became ________ most celebrated of the small excellent group of black women who at midcentury served as mathematicians for the space agency. （用适当的词填空）

6 . Online shopping was invented and pioneered by Michael Aldrich in ________ U.K. in 1979, while the Japanese operated the first modern high-speed rail in 1964. （用适当的词填空）

7 . After more than 600 years of development, ________ handcraft of Beijing glassware has been passed down to the seventh generation. （用适当的词填空）

8 . Shen Maosheng, who led the dig, said most of the newly found warriors can be divided into two groups. One group is carrying poles, while ________ other carries bows. (用适当的词填空)