【名词&注释】
线粒体(mitochondria)、遗传信息(genetic information)、药用植物(medicinal plant)、有利于(beneficial to)、双层膜结构(double membrane structure)、产生影响(have effect)、国会议员、叶绿体类囊体(chloroplast-thylakoid)、沼泽地改造(swampland reformation)
[单选题]毛莨科植物多为有毒植物和药用植物，因其含有多种生物碱。( )
A. 正确
B. 错误
查看答案&解析
举一反三：
[单选题]数目固定，但在次生生长中可不断延长的初生射线为( )。
A. 维管射线
B. 髓射线
C. 韧皮射线
D. 木射线
[单选题]The passage in mainly about
A. how Chinese students won the awards in the competition
B. why bloggers should take responsibility for their blogs
C. how Miss Gao won the first prize in the competition
D. what the result of the competition was
[单选题]
A. improvements
B. pains
C. difficulties
D. advantages
[单选题]BWhen people hear a president speak, they seldom think about others helping to shape the presentation（报告）. Today, however, presidents depend on writers such as J. Terry Edmonds to help them communicate（交流）effectively. Edmonds is the first African American ever to work as a full-time speechwriter for a U.S. president; he is also the first African American to serve as director of speechwriting for the White House. His is an all-American story of success.
A. Edmonds grew up in Baltimore, Maryland; his father drove a truck, and his mother worked as a waitress. A great reader, Edmonds showed a gift for writing at his high School, Baltimore City College. After graduating in 1967, Edmonds went on to Morgan State University.
B. Edmonds began his career in business, with jobs in public relations and communications, He joined the world of politics as news secretary for his congressman (国会议员) from Baltimore, During Bill Clinton’s presidency, he worked speeches for Health and Human Services Secretary Donna Shalala and worked in a number of jobs in the White House and in governmental departments. President Clinton then appointed (任命) him to the office of director of speechwriting, Following the 2000 elections, Edmonds returned to Morgan State University as the school’s special assistant to the president for 2001-2002.
C. 45. Which of the following statements is TRUE according to the text?
D. Edmonds proved himself to be good at writing at high school.
E. Edmonds graduated from Morgan State University in 1967.
F. Edmonds was the first full-time speechwriter.
G. Edmonds served the White House after 2000.
[单选题]下列有关线粒体和叶绿体的叙述，错误的是
A. 线粒体和叶绿体携带的遗传信息可以表达出来
B. 线粒体和叶绿体为双层膜结构，其内膜中酶的种类相同
C. 线粒体内膜向内折叠形成嵴，叶绿体类囊体(chloroplast-thylakoid)堆叠形成基粒
D. 蓝藻没有叶绿体也能进行光合作用
[单选题]人类活动会对生物多样性产生影响。以下措施中，有利于保护生物多样性的是 ( )
A. 大量引进外来物种，使当地生物群落中的物种更多样化
B. 禁止游人进入自然保护区的核心地区，让生物自然繁衍
C. 把沼泽地改造(swampland reformation)成农田，种植多种农作物，增加经济收入
D. 在亚热带林区大面积种植速生桉树，以增加林木生长量
[单选题]What is one of the problems that David is facing now?
A. He is too young to get a credit card.
B. He has no time to learn driving.
C. He has very little spare time.
D. He will soon lose his job.
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