1.选择题- (共6题)
2.家庭性高胆固醇血症是一种遗传病，杂合体约活到50岁就常患心肌梗塞，纯合体常于30岁左右死于心肌梗塞，不能生育。一对患有家族性高胆固醇血症的夫妻，已生育一个完全正常的孩子，如果再生一个男孩，那么这个男孩能活到50岁的概率是 （ ）
6.一对夫妇，其后代若仅考虑一种病的得病率，则得病可能性为 a ，正常的可能性为 b , 若仅考虑另一种病的得病几率，则得病的可能性为 c ，正常的可能性为 d 。则这对夫妇结婚后，生出只有一种病的孩子的可能性的表达式可表示为
① ad + bc； ②1-ac-bd ； ③ a + c-2ac ； ④ b + d-2bd
① ad + bc； ②1-ac-bd ； ③ a + c-2ac ； ④ b + d-2bd
2.单项选择- (共7题)
7.
The father and the son entered the tiger area _______ two doors were open at the time.
Suddenly five tigers appeared, one of which killed the father.
Suddenly five tigers appeared, one of which killed the father.
| A．there | B．which | C．its | D．whose |
8.
The foreign guests who paid a visit to our city last week are greatly impressed by the fact that_______ people from all walks of life are working hard for_______ new Haimen.
| A．不填; a | B．不填；the | C．the；a | D．the； the |
9.
—My grandma decides to _______ her company to me after she is retired.
—You must be under great pressure.
—You must be under great pressure.
| A．take over | B．hand over | C．go over | D．run over |
10.
Gilbert wasn’t ______ the time this morning, so he was late for school.
| A．involved in | B．particular about | C．linked to | D．aware of |
11.
We should consider the professor’s advice _______ our school library provide more books on popular science.
| A．that | B．when | C．which | D．where |
12.
—I was on the point of crossing the road _______ the car accident happened.
—So you are a witness.
—So you are a witness.
| A．where | B．when | C．that | D．which |
试卷分析
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【1】题量占比
选择题:(6道)
单项选择:(7道)
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【2】：难度分析
1星难题：0
2星难题：0
3星难题：0
4星难题：0
5星难题：0
6星难题：0
7星难题：0
8星难题：7
9星难题：0