27. – Why don’t we choose that road to save time?
-- The bridge to it _______.
A has repaired B is repaired C is being repaired D will be repaired
26. East of our school ________ two companies ______ electric motorbikes are made.
A are; that B is; where C is; that D are; where
25. In my opinion, no search engine can ______ Baidu in searchscope and speed.
A compete B equal C win D suit
24. Mr. Smith, who ________ as a carpenter for over 10 years, is now a very famous statesman in this country.
A has worked B works C had worked D worked
23. Tom _________ two of his classmates ____________ invited to the party.
A as well as; was B as good as; were C and; have D as well; has been
22. With nothing _________ behind, he felt _________.
A left; relieving B leaving relief C left; relieved D leaving; relieved
第一节：单项填空(共20小题，每小题1分，满分20分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
例：It is generally considered unwise to give a child he or she wants.
A．however B．whatever C．whichever D．whenever
答案是B。
21. The parents rushed to the hospital ________ they heard that their son was injured.
A at the moment B the moment C for the moment D in the moment
39.(8分)在一群野生型红眼果蝇中发现了一只罕见的突变型白眼雄果蝇，让这只白眼雄果蝇与群体中的红眼雌果蝇交配，产生的F1全为红眼果蝇，性别有雌有雄，现已知红眼与白眼为一对相对性状，受一对等位基因W与w控制，且红眼对白眼为完全显性，请利用上述材料，(即野生型红眼果蝇，突变型白眼雄果蝇，F1红眼果蝇)，选择亲本，设计一个实验方案，只做二代杂交实验，探究控制红眼与白眼这一相对性状的等位基因是仅位于X染色体上，还是位于X与Y染色体的同源区段。(只要求写出进行两代杂交所选亲本的来源及表现型，及预测最终杂交的实验结果和得出相应的结论)。
(1)第一代杂交实验母本 雌果蝇，父本 雄果蝇。
第二代杂交实验母本 雌果蝇，父本 雄果蝇。
(2)实验结果预测1 ，
结论： 。
实验结果预测2 ，