急需这些题的答案,请求帮忙11：Hefindsithardtohisthoughtsononethingforlongerthanfiveminutes.1.drive2.see3.focus4.attend12：Theylaughteratthesightofus.1.raninto2.burstinto

Question

急需这些题的答案,请求帮忙
11：He finds it hard to _____ his thoughts on one thing for longer than five minutes.
1.drive 2.see 3.focus 4.attend
12：They _____ laughter at the sight of us.
1.ran into 2.burst into 3.burst out 4.went into
13：Some people say that the detailed organizational life of ants should be attributed to their_____.
1.distinct 2.subject 3.instinct 4.feature
14：Scientists have recently turned their attention to natural ______ of energy: the sun, the sea, the wind and hot springs.
1.image 2.appearance 3.sources 4.cause
15：It is critical that we _______________ our concept of lifestyle nowadays.
1.are changing 2.will change 3.have changed 4.should change
16：Housewives who do not go out to work often feel they are not working to their full ______.
1.capacity 2.strength 3.length 4.possibility
17： Why didn’t you ask for help, ______ trying to do it on your own?
1.other than 2.rather than 3.more than 4.less than
18：The city government promises to ______ the problem of unemployment in real earnest.
1.postphone 2.tackle 3.compose 4.anticipate
19：Railroad tunnels, however, _____ the construction engineer with some unique problems.
1.comfort 2.meet 3. confront 4.have
20：I can’t _____ a lot of noisy people when I’m working.
1.come up with 2.keep up with 3.give up with 4.put up with

Answer 1

11. 3C/ 12. 2B/ 13. 3C/ 14. 3C/ 15. 4D/ 16. 1A/ 17. 2B/ 18. 2B/ 19. 3C/ 20. 2B