【名词&注释】
垃圾邮件(spam)、东部地区(east)、减数分裂(meiosis)、西部地区(western region)、被子植物(angiosperm)、义务教育阶段(compulsory education stage)、孢子体(sporophyte)、国务院、大孢子母细胞(megasporocyte)、助细胞(synergid)
[单选题]胚囊中的卵器指( )。
A. 卵细胞
B. 1个卵细胞和2个助细胞(synergid)
C. 一个卵细胞和二极核
D. 卵细胞和三反足细胞
E. 2个助细胞(synergid)
查看答案&解析
举一反三：
[单选题]被子植物的孢子体(sporophyte)阶段是从合子开始到大孢子母细胞(megasporocyte)和小孢子母细胞进行减数分裂前为止。( )
A. 正确
B. 错误
[单选题]⒍下列句子中，表现沈通明“有情”“有义”的一组是（ ）(3分)①通明匿仰妻子他所 ②裂束帛缚其爱妾，负之背
A. ③若辈亦知沈将军耶 ④意不自聊，祝发为浮屠
B. ⑤每醉辄歌呼邓州市上 ⑥已询知为彭巡抚，乃大喜吐实
C. ①②④ B．②③⑤ C．①⑤⑥ D．③④⑥
[单选题]2008年7月30日国务院决定，从2008年秋季学期开始，在全国范围内全部免除______义务教育阶段学生学杂费。
A. 城市 B．农村
B. 东部地区 D．西部地区
[单选题]DWhen I first got an email account ten years ago, I received communications only from family,friends,and colleagues.Now it seems that every time I check my e-mail ,I have an endless seriers of advertisement and otner correspondence that do not interest the at all.If we want e-mail to continue to be useful,we need special laws that make spamming(发送垃圾邮件) a crime.
A. This problem is troubling for inviduals and companies as well. Many spam emails contain computer viruses that can shut down the entire network of a company.Companies rely on e-mail on on e-mail for their Comployees to communicate with each other. Spam frequently causes failures in their local commnications networks,and their employees are thus unable to communicate effectively.such a situationg results in a loss of productivity and requires companies to repeatedly repai their networks.These computer problems raise productton costs of companies ,which are,in the end,passed on to the consumer.
B. 60.What is the purpose of the text?
C. To inform.
D. To educate
E. To persuade
F. To instruet
[单选题]奎宁的pKa值为8．4，其在哪个部位更易吸收（ ）。
A. 胃
B. 小肠
C. 胃和小肠
D. 饱腹时胃中
E. 空腹时胃中
[单选题]白果是银杏(Ginkgo biloba6口)的果实。( )
A. 正确
B. 错误
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