能促进脂肪酸合成的是()
A. 6-巯基嘌呤
B. 甲氨蝶呤
C. 氮杂丝氨酸
D. 别嘌呤醇
E. 阿糖胞苷
HPV的E6蛋白能灭活()
A. ras基因产物
B. p53基因产物
C. Rb基因产物
D. myC基因产物
案例分析题One day a little boy comes into a shop and (1) the shop assistant,“I want (2) twelve exercise books of 6 cents each and pencils of 10 cents each. (3) is that altogether”The shop assistant writes these numbers down on (4) and thinks for (5) . Then she says,“1 dollar and 62 cents.”“If I gave (6) ten dollars, how much will I get (7) ”“You’ll get (8) for change. Here you are. Here are the things you want.”“ (9) , I don’t want to buy anything.”“ (10) boy looks at the piece of paper and says politely, “This is one of my homework. Thank you very much. Can I take it away”“What!”says the shop assistant angrily. (6)处应填写()
A. me
B. you
C. it
案例分析题One day a little boy comes into a shop and (1) the shop assistant,“I want (2) twelve exercise books of 6 cents each and pencils of 10 cents each. (3) is that altogether”The shop assistant writes these numbers down on (4) and thinks for (5) . Then she says,“1 dollar and 62 cents.”“If I gave (6) ten dollars, how much will I get (7) ”“You’ll get (8) for change. Here you are. Here are the things you want.”“ (9) , I don’t want to buy anything.”“ (10) boy looks at the piece of paper and says politely, “This is one of my homework. Thank you very much. Can I take it away”“What!”says the shop assistant angrily. (7)处应填写()
A. on
B. in
C. back