問題詳情
1.为了验证胰岛素具有降低血糖含量的作用，在设计实验方案时，如果以正常小鼠每次注射药物前后小鼠症状的变化为观察指标，则下列对实验组小鼠注射药物的顺序。正确的是
(A)先注射胰岛素溶液，后注射葡萄糖溶液
(B)先注射胰岛素溶液，再注射胰岛素溶液
(C)先注射胰岛素溶液，后注射生理盐水
(D)先注射生理盐水，后注射胰岛素溶液
(A)先注射胰岛素溶液，后注射葡萄糖溶液
(B)先注射胰岛素溶液，再注射胰岛素溶液
(C)先注射胰岛素溶液，后注射生理盐水
(D)先注射生理盐水，后注射胰岛素溶液
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
內容推薦
- BSome people have the feeling that nothing can be done about their poor reading ability (能力). They f
- With Dr. White' s new idea, the operation on the damaged brain _______.(A)can last as l
- 1．《学记》上说：“不陵节而施”，这句话体现了 （ ）(A)启发性原则 (B)循序渐进原则 (C)因材施教原则 (D)巩固性原则
- – What are you reading, Tom?– I’m not really reading, just ___ the pages.(A) turning off (B) turn
- What can we learn about Lieberman from the text?(A)He is clever but lonely. (B)He is friendl
- The brain operation was made possible mainly by _______.(A)taking the blood out of the brain
- Why did the airline company give Liebeman the job?(A)He could prepare meals in a small kitch
- DIt is difficult for doctors to help a person with a damaged brain. Without enough blood, the brain
- What does the word "charisma" underlined in the text refer to?(A)A natural ability
- At the beginning of class, the noise of desks _______could be heard outside the classroom.(A)ope
內容推薦
- To improve their reading albility, people should .(A)work long and hard (B)take different fo
- If the weather had been better, we could have had a picnic But it ____ all day.(A) rained (B) ra
- EMost people want to know how things are made. They honestly admit, however, that they hard¬ly know
- The experiments mentioned in the text show that .(A)good readers seem to enjoy reading(B)alm
- The director had her assistant ___ some hot dogs for the meeting.(A) picked up (B) picks up (C)
- The words "covered in complete darkness" underlined in Paragraph I most probably m
- COdiand remembers like it was yesterday working in an expensive French restaurant in Denver. The ice
- Stand over there ___ you’ll be able to see the oil painting better.(A) but (B) till (C) and (D)
- Most people seem to think that a composer _______ .(A)finds it difficult to write music (B)c
- Odiand learned one of his life lessons from ______.(A)his experience as a waiter (B)the advi
- AGrowing up in Philadelphia, Lieberman started cooking with his stay-at-home dad when he was seven.
- If their marketing plans succeed, they ____ their sales by 20 percent.(A) will increase (B) have
- The author will most probably agree that composers _______(A)are bornwith a gift for music (
- According to the text, most CEOs have the same opinion about _______.(A)Fortune 500 companie
- The Food Network got to know Lieberman _______.(A)at one of his parties (B)from his teachers
- –Do you know Anna’s telephone number?-- ____. As a matter of fact, I don’t know any Anna, either.
- Modern equipment and no smoking are two of the things I like ____ working here.(A) with (B) over
- 在教育活动中，既是教育实践活动的对象，同时也是学习的主体的是（）(A)教育者 (B)受教育者 (C)教育影响 (D)教师
- From the text we can learn that _______.(A)one should be nicer to important people(B)CEOs of
- A small car is big enough for a family of three ____ you need more space for baggage.(A) once (B)
- The road conditions there turned out to be very good, ___ was more than we could expect.(A) it (
- It’s not ___ good idea to drive for four hours without ___ break.(A) a ; a (B) the ; a (C) the ;
- Liza ___ well not want to go on the trip --- she hates traveling.(A) will (B) can (C) must (D) m
- Little Johnny felt the bag, curious to know what it ____.(A) collected (B) contained (C) loaded
- The house still needed a lot of work, but ___ the kitchen was finished(A) instead (B) altogether