1 . The historic building is as much part of our culture as calligraphy and traditional Chinese paintings, ________ which we’ve always been taking great pride. （用适当的词填空）

2 . To the east of the Pacific coast rise the grand Rocky Mountains, _________ are home to high peaks and deep valleys carved by ice and water. (用适当的词填空)

3 . A global conference on climate change--COP 26-was held in Glasgow, Scotland, ________ topic was how to control the trend of global warming. （用适当的词填空）

4 . One of the most impressive historical epic films, “The Battle at Lake Changjin”, _______ Wu Jing and Jackson Yee had played the lead roles, moved many filmgoers to tears.（用适当的词填空）

5 . Tom’s father suffered from long-term health problem, as a result of ___________, his family had little money to afford his formal schooling. (用适当的词填空)

6 . 大火导致了很多人受伤，其中五人情况危急。(dozen, 非限制性定语从句) (汉译英)

7 . As well as doing these biological experiments, we carry out other experiments, one of ________ purposes is to locate and track lightning overt large regions of the Earth.（用适当的词填空）

8 . It all began in 1877, ________ Thomas Edison made the first recording of a human voice on his invention, the record player.（用适当的词填空）

9 . The school has more than 970 middle and high school students, half of ________ are Chinese. （用适当的词填空）

10 . We hope the measures to control house prices, ________ are taken by the government, will succeed.

A．which

B．that

C．what

D．they