下列关于育种优点的叙述，不正确的是（）_刷题宝

题干

下列关于育种优点的叙述，不正确的是（）

A：多倍体较二倍体茎杆粗大，果实种子较大些

B：杂交育种能产生新基因

C：人工诱变育种能提高变异频率

D：利用单倍体育种能明显缩短育种年限

上一题下一题 0.0难度选择题更新时间:2019-12-22 09:38:20

答案(点此获取答案解析）

B

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中华民族传统文化的核心内容是（）

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写出近义词

震撼—____ 心中无数—____ 山穷水尽—____ 启迪—____ 不慌不忙—____

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（2015.福建莆田）

	Enjoy Harvesting Want to relax yourself? Want to experience country life? Come and pick litchi! Free for a taste. Price:￥20 per kilo Dates: July 20th-July 28th Add: Changlin village Tel:277-8688
	Fitness Band on sale Smartwatches without the watch Monitor speed, time, distance, caloties burned, etc. Long battery（电池）life (5 days) ￥800 （20% off for students) Tel:289-6799 Visit Sam Mall for more information.
	Ice and Snow Festival Charming Ice Carving Amazing World of Ice and Snow Welcome to Fenghuang Park! Dates: July 1st -July 25th ￥20 for each adult (half for each student) Tel:288-6299
	Super Pillow（枕头）Fight Party Pillow Fight, a popular activity among young foreigners, has now come to Putian. It's a creative way to release(释放) pressure and stress. Place:Putian Stadium Time:2:30-5:00pm, June 28th Fee:￥50 (pillow included) Tel:275-6588

同类题4

下表中的动物与其气体交换部位对应错误的是

A	蚯蚓	体壁
B	鲫鱼	鳃
C	青蛙	肺与皮肤
D	家鸽	肺与气囊

同类题5

既是偶函数又是周期函数，若

的最小正周期是

的值为（）

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