【名词&注释】
单倍体(haploid)
[单选题]桃在我国栽培历史很久，有诗为证：“桃之天天，灼灼其华”(见《诗经》)。( )
A. 正确
B. 错误
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举一反三：
[单选题]珠心、珠被和珠柄愈合的部位，称合点。( )
A. 正确
B. 错误
[单选题]How did the calf feel about the mother elephant’s roaring?
A. It was a great comfort.
B. It was a siga of danger.
C. It was a call for help.
D. It was a musical note.
[单选题]红藻门植物的果孢子均是单倍体的。( )
A. 正确
B. 错误
[单选题]黄瓜的花属于( )。
A. 周位花
B. 下位花
C. 上位花
D. 半下位花
[单选题]We ear comude from the text that .
A. American cities are changing far the worse
B. people have different views on American cities
C. many people are now moving from American cities
D. the population is decreasing in older American cities
[单选题]由两个以上的心皮边缘互相联合形成一室复子房，胚珠着生在心皮边缘联合处，这样的胎座称( )。
A. 中轴胎座
B. 边缘胎座
C. 侧膜胎座
D. 特立中央胎座
[单选题]菊科有Asteraceae和Compositae两个名称，其中Compositae属于( )。
A. 异名
B. 废弃名
C. 合法的正确学名
D. 保留名
E. 基原异名
[单选题]Computers and mobile phones, playgh they are indeed making our life__________ and more ________have reduced the need for face-to-face cotyr unication.
A. easily;effienenl
B. easy,efficient
C. easy;efficiently
D. easily;efficiently
[单选题]Where can we most probably read this text?
A. In a personal diary
B. In a science report
C. In a travel magazine
D. In a geography textbook
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