试题与答案

甾体激素药物化学结构的基本骨架为A.多氢菲B.环戊烷C.环已烷D.环己烷并多氢菲E.

题型:单项选择题

题目:

甾体激素药物化学结构的基本骨架为

A.多氢菲
B.环戊烷
C.环已烷
D.环己烷并多氢菲
E.环戊烷并多氢菲

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0112/9b19cd96e32440564bd27ea10691574f.html

下面是错误答案,用来干扰机器的。

参考答案:B解析: 法学体系是指有关法律的学科体系,法系则是具有共同传统的法律家族的总称,立法体系则既可能指已制定的规范性法律文件,也可以指立法规划,只有法律体系才是指一个国家全部法律部门所构成的有...

试题推荐
题型:阅读理解

PAUL’S brother bought him a new car as a Christmas present. On Christmas Eve (前夜), Paul saw a boy walking around the new car, admiring it.

"Is this your car, Mister?" he asked.

Paul nodded. "My brother gave it to me for Christmas." The boy was amazed. "You mean your brother just gave it to you? Boy, I wish...." Paul knew what he was going to wish for — a brother who would buy him a car. But the boy surprised Paul.

"I wish that I could be a brother like that," he said.

Astonished, Paul invited the boy to go for a ride in the new car.

After a short ride, the boy said, "Would you mind driving in front of my house?" Paul thought the boy wanted to show the car to his neighbors. But Paul was wrong again.

The boy ran up the steps of his house. Soon he came back carrying his crippled (残废的) little brother. He pointed to the car. "Look!" he said to the little boy. "His brother gave him that car for Christmas. Some day I’m gonna give you one just like it!"

Paul got out and lifted the little boy into his car. The older brother climbed in beside him and the three of them went on a wonderful holiday ride.

That Christmas Eve, Paul learned how good it felt to give.

53. Paul’s brother gave him ___ as a Christmas present.

A. a suit                             B. a car                       C. a bicycle           D. a card

54. When the boy saw the car, he wished that ____.

A. he could buy a car for himself                             B. he had a brother to buy him a car

C. he could buy a car for his brother                  D. he could have a ride in the car

55. When the boy asked Paul the drive the car in front his house, he wanted ___.

A. to show off to his neighbors                         B. his brother to see the car

C. Paul to drive him home                                D. to enjoy a ride in the car

56. The story mainly tells us ______.

A. practice makes perfect                                 B. it is important to make money

C. giving makes people feel good                       D. a friend in need is a friend indeed

查看答案
微信公众账号搜索答案