对下面句子中加粗的词语在句子中的含义理解不正确的一项是[ ] A．我赤裸裸来到这

比7的8倍还多158的数是多少？

如果一个行业产出增长率经常保持15%以上，可以初步判断该行业处于（）阶段。

A.幼稚期

B.成长期

C.成熟期

D.衰退期

按课文填空。根据课文内容填入适当的单词，完成短文。（10分）

It’s also probably a good idea for parents to  _76 teenagers to study in groups  77 the evening. I know we get  78 sometimes, but we  79 a lot from each other. We also think that vacations should be   80 . At present they’re too short. Longer vacations would give us time to do things  81  volunteering. Last summer I had an  82 to volunteer at the local hospital, but I couldn’t because I had to  _84 back to school. It would be a good  _84 for me because I want to be a doctor when I’m  85  .

房地产的开发建设成本高并不一定意味着房地产的价格就该高，开发建设成本低也不一定说明房地产的价格就不该高。（）

如图是苯丙酮尿症的系谱图，下列相关叙述不正确的是（）

A．8不一定携带致病基因

B．该病的致病因子为隐性

C．若8与9婚配生了两个正常孩子，则第三个孩子的患病概率为1/9

D．若10与7婚配，生正常男孩的概率是1/4