18、Determination is a kind of basic quality and is         it takes to do jobs well.

A．what         B．that          C．which         D．why

17、David apologized for         to inform me of the change in the plan.

A．his being not able                                        B．him not to be able

C．his not being able                            D．him to he not able

16、         waking from a dream, Silicon Valley has suddenly realized that the_________economy means trouble for tech companies.

A．Although, collapsing                           B．As if, collapsed

C．Although, collapsed                 D．As if, collapsing

15、Comparison may make something appear more beautiful than it is when         alone.

A．to see            B．seeing           C．is seen          D．seen

14、The man showed us such a heavy stone         no man could lift.

A．that          B．a(chǎn)s           C．which            D．a(chǎn)nd

13、The Y-shaped Metro Line 11, the longest subway in China,         Jiading District, Nanhui District and the downtown city, will be completed in late 2009.

A．connecting            B．connects         C．to be connected                D．will connect

12、The professor can hardly find sufficient grounds         his argument.

A．which to be based on                         B．on which to base

C．which to be based                      D．which to base

11、The women carrying babies, come in first,          ?

A．will you           B．will they           C．do you         D．don’t you

10、Only when               .

A．did he arrive the meeting began                    B．he arrived the meeting began

C．did he arrive the meeting begin               D．he arrived did the meeting begin

9、Complete the passage with the words given in the table. Each word can be used only once. There is an extra one that you will find no use for.

       A leading researcher into old age has warned that the dream of living forever, or at least much longer than at present, could turn into a curse（禍根）rather than a blessing. It may become possible to lengthen the    1    human life by controlling genes---but what we gain may not be worth the price we would have to pay.

       Professor John Grimley Evens believes that    2   , maximum life expectation is 115, but that with gene    3    it might be possible to extend this. The professor says, however, that a

4    lifestyle can extend the average lifespan of everyone at the moment.

       “We know a lot already about how people’s lifestyles    5    their lifespan. There is increasing    6    to suggest that sensible lifestyles are effective in later life as well as in early and middle life.”

       “It is never too late to gain some    7    from giving up smoking, from drinking less alcohol, from taking up sensible patterns of diet and exercise and from controlling body weight. We already know how to     8    human life.”

       The professor believes that the process of lengthening life by means of gene therapy might bring dangers with it. If gene therapy affected only one part of the human body but not all of it, people might be    9    capable of living longer, but would start to be worse mentally at a much earlier age.