A．to assume B．assumed

C．assume D．assuming

答案　D

解析　assuming (that)．..假定......。类似表达有：providing/supposing that...。故选D。

6．Scientists are convinced _________the positive effect of laughter______ physical and mental health.

A．of；at B．by；in

C．of；on D．on；at

答案　C

解析　句意为：科学家们坚信笑对身心健康有积极影响。be convinced of坚信，深信；effect常与on连用，意为"对......的影响"。以上两个均属于固定搭配。所以选C。

7．After the traffic accident，no one except a few people who were badly injured_______.

A．survive B．survived

C．was survived D．was surviving

答案　B

解析　从句意分析可知，此处survive应表示"幸存"的意思，是不及物动词，不能用被动语态；由were可知用过去时态。所以选B。

8．That money is_________ to me，but I haven't got it yet.

A．certain B．due

C．belong D．owe

答案　B

解析　be due to sb.应支付给某人，是固定搭配；C、D两项形式不对。所以选B。

9．Caroline doesn't have a gift for music，but she___________ it with hard work.

A．goes back on B．takes away from

C．makes up for D．catches up with

答案　C

解析　考查动词短语辨析。句意为：卡罗琳虽然没有音乐方面的天赋，但是她用刻苦努力来弥补它。Go back on背叛，背弃；take away from拿走，带走；make up for弥补；catch up with赶上，追上。由句中的关键信息"doesn't have a gift for music"以及并列连词but可知，她是用刻苦努力来"弥补(make up for)"没有音乐天赋这件事。

10．Would you please the paper for me and see if there are any obvious mistakes?

A．look around B．look into

C．look up D．look through