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【单选题】
如果某体细胞中染色体的数目在二倍体的基础上增加一条则可形成:A.
单倍体
B.
三倍体
C.
单体型
D.
三体型
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Memory Class Stan Field knows what age can do to a person's memory, and he's not taking any chances with his. He chooses his food carefully and gets plenty of exercise. He also avoids stress, coca col...
A.
Food only.
B.
Food and pills.
C.
Nothing.
D.
A plateful of pills only.
【简答题】试解释邻对位定位基的定位规律。
【单选题】Section B 听力原文：W: Stan, do you have a minute? M: Oh, hi, Cathy. Sure. What's up? W: Well, I've been meaning to talk to you about the situation in the office. M: I'm not in there very often. It's so no...
A.
There aren't enough cabinets.
B.
There is too much noise.
C.
Office supplies are taking up space.
D.
Some teaching assistants don't have desks.
【简答题】对下列化学事实的解释不正确的是
【单选题】What’s the major difference between Chinese and Western dragons?
A.
Chinese dragons have no wings.
B.
Chinese dragons are more beautiful.
C.
Western dragons are longer.
D.
Western dragons have claws.
【简答题】关于基差，下列说法不正确的是（ ）。
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