题目内容
Chinese scientists have produced an embryo of a giant panda through cloning technology,_____ is a breakthrough ______ could save the endangered animals.
| A．that; which | B．which; that | C．which; what | D．that; what |
B
解析试题分析： 句意：科学家已经通过克隆技术复制出大熊猫的胚胎，这是能够拯救濒危动物的一项突破。第一空填which，引导非限制性定语从句，指代前面的内容，that不能引导非限制性定语从句，第二空填that修饰breakthrough，在定语从句中做主语，所以选B。
考点：考查定语从句
If he ___ me his telephone number yesterday, I ___ able to ring him up now.
| A．told, would be | B．had told, would have been |
| C．had told, would be | D．told, am |
Helen has got＿＿＿it takes to be a great tennis player．In other words, she has the potential to become world famous.
| A．how | B．what | C．when | D．that |
Housing prices _____much higher now if the government hadn’t taken measures to control house dealing.
| A．were | B．would be | C．had been | D．would have been |
John returned with two workers, with_______ help we finally got the car out of the mud.
| A．whose | B．their | C．which | D．that |
It is demanded that the plan _____ out as soon as possible.
| A．must be carried | B．is to carry out | C．carried | D．be carried |
Guess what! I came across my primary school science teacher this morning, ______ I have lost touch for almost 20 years.
| A．of which | B．when | C．with whom | D．who |
It was not until the end of the meeting_____________.
| A．that she turned up | B．when she turned up |
| C．did she turn up | D．had she turned up |
---Oh,Tom! You are too late.
---Sorry. How I wish I_____measures Mr Smith suggested to leave ten minutes earlier.
| A．adopted | B．would adopt | C．had adopted | D．could adopt |