甲型肝炎的主要传播途径是( )。
A.飞沫传播 B.粪-口传播 C.血液传播为主 D.虫媒传播 E.垂直传播
参考答案:B
解析:[知识点] 甲型病毒性肝炎的流行病学
阅读选择正确答案。
Bill, Jack and I are in the same class at Chongqing No.2 High School. We are good friends, but we are
from different countries (国家). Bill is from England. He likes Chinese noodles very much. Jack's favorite
food is hamburgers. They look like twin (双胞胎) brothers, but they are not. Jack is from Canada. I come
from China. I like Chongqing food very much. They like singing very much and I like playing soccer
a lot.
1. We are in _______ now.
A. Beijing
B. Chongqing
C. America
2. We are from _______ countries.
A. same
B. different
C. all
3. Jack like _______ very much.
A. Chinese noodles
B. eggs
C. hamburgers
4. Jack is Bill's _______.
A. friend
B. brother
C. teacher
5. My favorite sport is _______.
A. driving
B. singing
C. soccer
一个平行四边形的面积为65cm2,与它等底等高的三角形面积为______cm2.