23、In spite of failing to save every endangered species, we may preserve the majority______ extinction.

A．off        B．with           C．beyond           D．from

19、-- Our holiday cost a lot of money.

-- Did it? Well, that doesn't matter __ you enjoyed yourselves.

A．even if          B．in case         C．a(chǎn)s far as         D．a(chǎn)s long as

18、The question came up at the meeting __ we had enough money for our research.

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

17、When the ship sailed out from Thailand, the 16 sailors on board __ that only half of them would return again.

A．will never think                      B．can never think

C．needn't have thought                  D．couldn't have thought

16、Five of the 12 bronze animal heads     to China, with seven other ones still missing.

A．returned                                B．had returned

C．have been returned                       D．have returned

15、I don't say I am against their plan. But the trouble is ___ they do doesn't agree with what they say.

A．what that         B．that what         C．if what           D．what if

14、Bolt's breaking the world record of 100-meter race was an exciting moment, ______ all of us will never forget.

A．one        B．that        C．when        D．what