1 . According to medical experts, there is a“golden period", the first 4 minutes of a heart attack,____________CPR(心肺复苏) is most effective in saving the persons' life. (用适当的词填空)

2 . 根据句意，在空白处填入1个适当的单词或括号内单词的正确形式，并将答案写在答题纸上相应题号的横线上。
1. By the latter half of the 14th century, English_______ (come) into widespread use among all classes in England.
2. At one time a government department banned some "borrowed words" from English, "weekend" and" e-mail"_______ (include).
3. The Chinese language differs from Western language in_______, instead of an alphabet, it uses characters which stand for ideas, objects and deeds.
4. Due to the easily_______ (access) Internet and television programmes from across the world, "borrowed words" is widely spread now.
5. Loulan, once a stopping point on the famous Silk Road between the East and the West, was a busy and _______ (wealth) commercial city about 2000 years ago.
6. After the eruption of the volcano, many people were buried alive, _______was the city of Pompeii.
7. The famous Silk Road is believed to_______ (cover) by sandstorms from AD 200 to AD 400 step by step.
8. It is the management rules of our chain store that payment_______be made in cash.
9. Originally, the desert was a green land with huge trees, which were cut down, thus resulting in the city _______ (bury) by sand.
10. This kind of urban planning is in the long term cheaper and_______ (practice), compared with the way most urban planning is done today.
11. By the age of thirty, Alexander the Great had already taken control of more land than anyone before and more glory seemed_______ (wait) for him ahead of time.
12. These sports were judged to have become less popular and had to give way_______new sports ,which are more popular.
13. Public service advertisements are often run for free, and are aimed at_______ (educate) people about health, safety, or any other problems affecting public welfare.
14. Different from a single advertisement, an ad campaign is a_______ (plan) programme of advertisements using various kinds of ads to influence a certain audience.
15. If_______ (convince) not to start smoking, as a result, young people might urge their parents and other people to quit smoking, too.
16. As for me, being a volunteer during the outbreak of the epidemic was an_______ (extreme) meaningful experience.
17. With the referees now _______ (keep) a close watch on the Eagles, they struggled and lost their next match.
18. The final round of the match between the two teams_______（tie）at 3:3 with minutes to go yesterday.
19. Bowling became a big hit in the 1950s, _______tournaments began to be broadcast on TV and spread to many other countries.
20. A professor and writer as well as some students_______（be）coming to our school next week.

3 . There is a big change from the late 1970s in China, ______ people first began leaving China for study and work.

A．where	B．which
C．when	D．from which

4 . The most exciting moment came, with relatives and friends present screaming and cheering, _________ Nicky expressed his love for his bride.

A．where	B．when
C．which	D．who

5 . Between the two periods of classes is a break, _______ we can have a short rest.

A．then

B．where

C．when

D．which

6 . Great changes have taken place in that school. It is no longer ___ it was 20 years ago, ___ it was so poorly equipped.

A．what, when

B．that, which

C．what, which

D．which, that