PartⅤ　Key to the Supplementary Practices

PartⅤ　Key to the Supplementary Practices

Practice 4.1

1.A　2.B　3.A　4.D　5.A　6.D　7.C　8.C　9.B　10.D

11.B　12.C　13.D　14.A　15.B　16.B　17.D　18.B　19.B　20.C

Practice 4.2

1.Tissues can be grouped into four major categories：connective,muscle,nervous,and epithelial.

2.The rapid reproduction of the bacterium remains a challenge to the immune system.

3.There is a dark side to the clinical study of organ transplant.(https://www.daowen.com)

4.Exercise is the best,if not the only way to normalize the blood pressure.

5.Perhaps the greatest current challenge in chemotherapy is the side effects of the medication.

6.Extensive research demonstrates fructose does not increase food intake or impact body weight.

7.There are relatively few studies dealing with the relationship between stem cells transplantation and inflammation.

8.The paper concludes that the new method is desirable.

9.Current evidence is still insufficient to assess whether taking vitamin supplements to prevent cancer is beneficial.

10.Antidepressant use is widespread；however,many questions remain about these drugs.