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【简答题】
玉米是雌雄同株的植物，顶生的垂花是雄花序，侧生的穗是雌花序。已知玉米中有两对独立遗传的基因(T对t，B对b)可以改变玉米的性别，即把雌雄同株转变为雌株或雄株。当基因b纯合且t不纯合时，使植株没有雌花序成为雄株；当基因t纯合时，使垂花序为雌花序，不产生花粉，如图所示。 (1)雄株的基因型为________，雌株的基因型有_______种。 (2)将基因型为BBTT植株与bbtt植株相间种植，子代基因型为________、________。 (3)将上述F 1 不同株间杂交的种子种植让其自花传粉，F 2 有几种表现型，其比例如何？__________。 (4)如果使后只含有雌株和雄株且比值相等，在F 2 应选择怎样的基因型个体作亲本？试用图解说明。
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错误
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【单选题】—Excuse me, Jim. I can't find my ruler. Can you see it? —I'm sorry I ______. [     ]
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can
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am not
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no t can
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【单选题】一般土壤 pH条件下,腐殖质中是易产生可变正电荷的功能基团是()。
A.
胺基
B.
羧基
C.
酚羟基
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【单选题】林小姐为了减肥拼命节食，结果人是瘦了，可是也得了胃病。以下译文使用原序翻译法且译文准确的是（）。
A.
In order to acquire a slim figure, Miss Lin extensively dieted to reduce her weight. Now she is slim, but she has an ulcer.
B.
Miss Lin extensively dieted to reduce her weight and to acquire a slim figure. Now she is slim, but she has an ulcer.
C.
Miss Lin is going on a diet in order to lose weight. As a result, she lost weight, but she also got stomach trouble.
D.
Miss Lin was desperately dieting in order to lose weight. As a result, she was thin, but she also had stomach problems.
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【简答题】7. If he _____, give him the message.A. were coming B. would come C. should come D. were come
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【简答题】读句子，填空。 1. I can't find _____________ toothbrush. _____________ toothbrush is lost. 2. She can't find _____________ teddy bear. _____________ teddy bear is lost. 3. They can't find _____________ car. ...
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【多选题】林小姐为了减肥拼命节食，结果人是瘦了，可是也得了胃病。以下译文正确的是（）。
A.
In order to acquire a slim figure, Miss Lin extensively dieted to reduce her weight. Now she is slim, but she has an ulcer.
B.
Miss Lin extensively dieted to reduce her weight and to acquire a slim figure. Now she is slim, but she has an ulcer.
C.
Miss Lin is going on a diet in order to lose weight. As a result, she lost weight, but she also got stomach trouble.
D.
Miss Lin was desperately dieting in order to lose weight. As a result, she was thin, but she also had stomach problems.
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【简答题】Translate and fill in the blanks. 根据汉语意思在横线上填入正确的单词。 1．我比你瘦。 I am you. 2．今年他两岁了。 He is two this . 3．你比我高吗？ you than ? 4．你喜欢哪只猴子？ monkey you like ? 5．我的手比你的手大。 My hands are than .____
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【简答题】Translate the following into English 1. It’s likely that the head will give us a speech on the first day of next month. 2. Most of workers only have one day off each week. U9词汇 翻译句子.doc 3. You c...
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【单选题】I can't _____ my car, I'm _____ it. [     ]
A.
find;  looking for
B.
look for;  finding
C.
find;  show around
D.
show around;  find
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相关题目：
【判断题】皮诺曹听狐狸和猫的话,真的种出了金币。..............................( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】—Excuse me, Jim. I can't find my ruler. Can you see it? —I'm sorry I ______. [     ]
A.
can
B.
am not
C.
can't
D.
no t can
查看完整题目与答案
【单选题】一般土壤 pH条件下,腐殖质中是易产生可变正电荷的功能基团是()。
A.
胺基
B.
羧基
C.
酚羟基
D.
醇羟基
查看完整题目与答案
【单选题】林小姐为了减肥拼命节食，结果人是瘦了，可是也得了胃病。以下译文使用原序翻译法且译文准确的是（）。
A.
In order to acquire a slim figure, Miss Lin extensively dieted to reduce her weight. Now she is slim, but she has an ulcer.
B.
Miss Lin extensively dieted to reduce her weight and to acquire a slim figure. Now she is slim, but she has an ulcer.
C.
Miss Lin is going on a diet in order to lose weight. As a result, she lost weight, but she also got stomach trouble.
D.
Miss Lin was desperately dieting in order to lose weight. As a result, she was thin, but she also had stomach problems.
查看完整题目与答案
【简答题】7. If he _____, give him the message.A. were coming B. would come C. should come D. were come
查看完整题目与答案
【简答题】读句子，填空。 1. I can't find _____________ toothbrush. _____________ toothbrush is lost. 2. She can't find _____________ teddy bear. _____________ teddy bear is lost. 3. They can't find _____________ car. ...
查看完整题目与答案
【多选题】林小姐为了减肥拼命节食，结果人是瘦了，可是也得了胃病。以下译文正确的是（）。
A.
In order to acquire a slim figure, Miss Lin extensively dieted to reduce her weight. Now she is slim, but she has an ulcer.
B.
Miss Lin extensively dieted to reduce her weight and to acquire a slim figure. Now she is slim, but she has an ulcer.
C.
Miss Lin is going on a diet in order to lose weight. As a result, she lost weight, but she also got stomach trouble.
D.
Miss Lin was desperately dieting in order to lose weight. As a result, she was thin, but she also had stomach problems.
查看完整题目与答案
【简答题】Translate and fill in the blanks. 根据汉语意思在横线上填入正确的单词。 1．我比你瘦。 I am you. 2．今年他两岁了。 He is two this . 3．你比我高吗？ you than ? 4．你喜欢哪只猴子？ monkey you like ? 5．我的手比你的手大。 My hands are than .____
查看完整题目与答案
【简答题】Translate the following into English 1. It’s likely that the head will give us a speech on the first day of next month. 2. Most of workers only have one day off each week. U9词汇 翻译句子.doc 3. You c...
查看完整题目与答案
【单选题】I can't _____ my car, I'm _____ it. [     ]
A.
find;  looking for
B.
look for;  finding
C.
find;  show around
D.
show around;  find
查看完整题目与答案