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30、When a ship that sank in 1628 was recovered from the port of Stockholm, the scientists were overjoyed with the chance _____ the remains of the past.

A. examine                   B. examining          C. to examine                D. examined

29、The scientists are trying to find out what ______ caused the dolphins to strand themselves, a strange animal behavior hard to understand.

     A. was it that            B. that was that    C. was that which      D. it was that

28、The government has revised the budget, 5% of______ will be used to help develop the medium  and small sized enterprises.

     A. that                  B. whose        C. which            D. as

27、―Could we see each other at 3 o’clock this afternoon?

―Sorry, let’s make it _______ time..

A．other                        B．the other             C．a(chǎn)nother               D．other’s

26、Dogs have a very good _______ of smell and are often used to search for survivors in an earthquake.

A．sense                       B．view                    C．means                 D．idea

25、This is an amazing area of study ______ new discoveries are being made almost every day.

A．from which                                      B．by which       

C．in which                                          D．through which

24、

Unfortunately, all the equipment, the computers and the printers included, ______ in the big earthquake.

A．was damaged                                          B．were damaged   

C．has been damaged                                   D．have been damaged

23、What he regrets is that more than a chance          ．

A．were given up                                            B．is given up

C．has been given up                                       D．have been given up

22、So unusually           that many students call her a “fairy”．

A．she behaves                                               B．behaves she

C．does she behave                                         D．does she behaves

21、Seeing someone in trouble，he always           help to them．

A．provides                 B．offers                    C．supplies                  D．presents