1 . Each class needs to select two students to ______ their class to take part in the contest.

A．reflect

B．decline

C．detect

D．represent

2 . By now, the miners________ gold with tools for approximately five years continuously, but in vain.

A．are detecting	B．will be detecting
C．have been detecting	D．have been detected

3 . 汉译英
1. leak vi＆vt.漏；渗漏；透露n.漏洞；裂缝；透露 ---______ adj. 漏的；有漏洞的--- ______ n.渗漏，泄漏
2. electrical adj.电的；用电的；有关电的--- ______ adj.电动的，导电的--- ______ n. 电工
3. wire n.电线；金属丝(或线). vt.接通电源；将…连接到--- ______ n.电线线路；线路系统--- ______adj. 无线的
4. detect vt.发现；查明--- ______ n.察觉，发现--- ______ n. 探测器；检测器---______adj. 未被发现的；未检测到的---______adj. 可检测的；可发觉的
5. relevant adj.有关的；有意义的--- ______ adv. 贴切地--- ______adj. 不相关的
6. fantasy n.幻想；想象--- ______ adj.极好的；奇妙的
7. innovation n.创新；创造---______ adj. 革新的；富有革新精神的--- ______ v. 革新，创新
8. available adj.可获得的；可购得的；（人）有空的--- ______ adj.不可获得的，不可使用的；抽不开身的--- ______ n. 可用性，可得性
9. structure n.结构；体系 vt.系统安排；精心组织--- ______ adj.结构（或构造）上的
10. security n.保护措施；安全工作---______ adj.可靠的；牢固的；安全的

4 . Smoke alarms are used to quickly _____ fire or smoke in a building and give an early warning.

A．reflect

B．disturb

C．detect

D．represent

5 . Tu Youyou would not ______defeat. She conducted the experiment again and again.

A．cancel

B．occupy

C．acknowledge

D．detect

E．agree

6 . When they were arguing with each other, I seemed to ________ some anger in their voices

A．detect

B．guarantee

C．cheat

D．assign

7 . Grandma said she was feeling okay, but I think I could ________ a bit of sadness in the way she was speaking.

A．experience

B．detect

C．show

D．suffer

8 . Any ear, nose or throat surgeon has many unbelievable stories about wonderful objects ________ (detect) in the noses and ears of children and adults. (所给词的适当形式填空)

9 . When another bean plant d________(察觉) the chemicals from its injured neighbour, it starts to release its own, different chemicals. (根据中英文提示填空）

10 . 词性转换
1. ________ n. 强调；重视；重要性→________ v. 强调；重视
2. ________ vi.&vt. 抵制；反抗；抵挡→________ n. 抵制；反对；抗拒→________ adj. 抵制的；有抵抗力的
3. ________ n. 图书管理员；图书馆馆长→________ n. 图书馆
4. ________ vi.&vt. (使)合并；成为一体→________ adj. 各部分密切协调的；综合的
5. ________ adj. 自动的→________ adv. 自动地
6. ________ vt. 发现；查明→________ n. 侦探→________ n. 探测器
7. ________ adj. 电的；用电的→________ n. 电→________ adj. 电子的
8. ________ adj. 不断的；重复的；不变的 n. 常数；常量→________ adv. 始终；一直