【名词&注释】
雌配子体(female gametophyte)、裸子植物(gymnosperm)
[单选题]裸子植物的雌配子体是( )。
A. 成熟胚囊
B. 珠心
C. 珠心和胚乳
D. 胚乳和颈卵器
查看答案&解析
举一反三：
[单选题]What can we infer from the text?
A. Working women usually have breakfast in a hurry.
B. Many people have wrong ideas about breakfast.
C. There are some easy ways of cooking a meal.
D. Eating vegetables helps save energy.
[单选题]合轴分枝是最进化的分枝方式，而假二叉分枝是最原始的分枝方式。 ( )
A. 正确
B. 错误
[单选题]Tim is in good shape physically he doesn't get much exercise.
A. if
B. even though
C. unless
D. as long as
[单选题]
A. put offB． put on
B. put down
C. put up
[单选题]冷杉不属于杉科，水松不属于松科，竹柏不属于柏科。( )
A. 正确
B. 错误
[单选题]若果直径在10厘米以下，果皮不易剥离，则此果为( )的果实。
A. 柚
B. 柑
C. 橙
D. 朱桔(橘)
[单选题]大戟科植物的一个显著特征是均具乳汁。( )
A. 正确
B. 错误
[单选题]听第8段材料，回答第10至12题。第10题：How long has the man been in London?
A. One year.
B. A few years.
C. A couple of months.
[单选题]51_______.
A. understand
B. explain
C. believe
D. question
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