题目内容
（请给出正确答案）
A、An international storehouse of all DNA data that has been collected to date
B、All the plasmids in a bacteria
C、All the genes in a bacteria
D、A collection of cloned DNA pieces
安装简答题APP，拍照搜题省时又省心！
更多“A DNA library is”相关的问题
| 阅读理解。 |
| An election year is one in which all four numbers can be divided by four (1944, 1948, etc.). Since 1840, American presidents elected in years ending in zero have been noticed to die in office. William H. Harrison, the man who served the shortest term, died of a kind of deadly illness several weeks after he took office. Abraham Lincoln was one of the four presidents who were murdered. He was elected in 1860, and his death came just five years later. James A Garfield, a former Union Army general from Ohio, was shot during his first year in office (1881) by a man to whom he wouldn’t give a job. While in his second term of office (1901), William McKinley, another Ohioan, attended the Pan-American Exposition at Buffalo, New York. During the reception, he was killed while shaking hands with some of the guests. Three years after election in 1920, Warren G. Harding died in office. Although it was never proved, many believed he was poisoned. Franklin D. Roosevelt had been elected four times (1932, 1936, 1940, and 1944), the only man to serve so long a term. He had suffered from poliomyelitis（小儿麻痹症）in 1921 and died of the illness in 1945. John F. Kennedy, the last of the line, was shot in 1963, only three years after his election. |
| 1. Which of the following was an election year？ |
| A. 1962 B. 1928 C. 1890 D. 1846 |
| 2. _______ served the shortest term in office. |
| A. Abraham Lincoln B. Warren G. Harding C. William McKinley D. William H. Harrison |
| 3. Which of the following statements is true？ |
| A. All presidents elected in years ending in zero died in office. B. Only presidents from the state of Ohio have died in office. C. President Abraham Lincoln died in the year of 1865. D. Franklin D. Roosevelt completed four times as president. |
| 4. How many presidents elected in years ending in zero since 1840 have died in office？ |
| A. 7 B. 6 C. 5 D. 4 |
| --- How’s everything going？ --- _______________.
|
A、borrowed
B、found
C、withdrew
D、wasted
A、Making a genomic library
B、Making a cDNA library
C、Southern blotting
D、Restriction digestion
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
微信搜一搜
简答题
微信搜一搜
简答题
如搜索结果不匹配，请 
