17、A British company has developed a camera that can detect（探测） weapons and hidden drugs, which is a great ______ for the security industry．

A．breakthrough           B．introduction          C．principle          D．conclusion

16、The company wishes to ______ its new factory beside the river．

A．find           B．stand            C．locate             D．arrange

15、Real teachers know that without them standing at the front of the class, ______ the knowledge, excitement, encouragement, passion and fun, schools will be very dull places indeed．

A．delivering                B．sending            C．teaching                D．presenting

14、This kind of flower ______ its richest smell at night．

A．throws light upon         B．cools off           C．applies for           D．gives off

13、True love never comes smoothly． However, in your lifetime searching, it may quietly ______ without your notice．

A．come across                                       B．come about

C．come to life                                         D．come into being

12、The study was carried out in one small town so we can’t be sure that the results are truly ______．

A．proper             B．impressive             C．representative              D．natural

11、It sounds ______, but it is true that they should argue about this issue for a whole afternoon．

A．unconditional              B．ridiculous              C．uncomfortable              D．sensitive

10、So different is this matter from the others that we should treat them ______．

A．urgently            B．relatively             C．especially                D．separately

9、His suggestions were ______ the will of their demonstration and thus he was driven out of their team．

A．in collision with                                   B．in relation to

C．in agreement with                                D．in harmony with