What does the word "dermatologist" (Line Para. 2) mean？
A person whose work is filling, cleaning and taking out teeth.
B. A person whose work is studying mental diseases.
C. A person whose work is healing eye diseases.
D. A person whose work is curing skin diseases.
查看答案
It can be inferred from this passage that ______.
A. all the offspring have their mothers' genetic engineering
B. part of the offspring have their mothers' genetic engineering
C. none of the offspring have their mothers' genetic engineering
D. half of the offspring have their mothers' genetic engineering
A．It's too boring and difficult to understand.B．He doesn't talk to students.C．He alway
A. It's too boring and difficult to understand.
B. He doesn't talk to students.
C. He always talks to himself.
D. He is always unhappy.
A．Is thankful for.B．Doesn't agree with.C．Is unsatisfied with.D．Is unhappy about.
A. Is thankful for.
B. Doesn't agree with.
C. Is unsatisfied with.
D. Is unhappy about.
The FDA declares that the wrongfully sold piglets ______.
A. may have side effects on consumers
B. may be harmful to consumers
C. are safe to consumers
D. may cause human illness
微信支付 
支付宝支付