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【单选题】
植物茎木质部中无输导能力的是()A.
晚材
B.
早材
C.
心材
D.
边材
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参考答案：
参考解析：
知识点：
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【单选题】Stress is the feeling you get when you're really worried about something． This is the kind of worry that troubles you for hours，or even days．It makes you feel (11)，scared(恐惧的)，or angry． You may find i...
A.
calm
B.
excited
C.
surprised
D.
upset
【单选题】The company's head office is in New York, and it has______ all over the world. [ ]
A.
branches
B.
sections
C.
departments
D.
patterns
【单选题】给未授粉的番茄雌蕊柱头涂上一定浓度的生长素溶液，可获得无籽番茄。说明：
A.
果实发育与受精作用有关
B.
果实发育与种子形成有关
C.
果实发育需要生长素
D.
生长素抑制了种子生长
【简答题】It can be very hard to think _____ when you're feeling so vulnerable (易受伤的) and alone.
【单选题】给未受粉的番茄雌蕊柱头涂上一定浓度的生长素溶液，可获得无籽番茄。说明 [ ]
A.
果实发育与受精作用有关
B.
果实发育与种子形成有关
C.
果实发育需要生长素
D.
生长素抑制了种子生长
【简答题】A friend of yours called Xiao Lin gave a party yesterday, which you enjoyed. In this section you are required to write an e mail to Xiao Lin to express your appreciation. You should write no more than...
【简答题】完形填空。 Stress is the feeling you get when you're really worried about something. This is the kind of worry that troubles you for hours, or even days. It makes you feel 1 , scared, or angry. You may fin...
相关题目：
【单选题】给未受粉的番茄雌蕊柱头涂上一定浓度的生长素溶液，可获得无籽番茄。说明 [ ]
A.
果实发育与受精作用有关
B.
果实发育与种子形成有关
C.
果实发育需要生长素
D.
生长素抑制了种子生长