与白血病相关的环境污染因素是
A.碘化消毒
B.紫外线消毒
C.常量氯化消毒
D.超量氯化消毒
E.加热消毒
参考答案:A
与白血病相关的环境污染因素是
A.碘化消毒
B.紫外线消毒
C.常量氯化消毒
D.超量氯化消毒
E.加热消毒
参考答案:A
阅读理解。 |
This is my first letter to you. I would like to tell you something about me. I'm a schoolgirl. My name |
1. Rose comes from _____. |
[ ] |
A. England B. English C. China D. America |
2. _____ is 13 years old. |
[ ] |
A. I B. My sister |
3. My mother will give _____ a little dog on my birthday. |
[ ] |
A. him B. her C. me D. I |
4. My father often tells us about _____. |
[ ] |
A. England B. China C. America D. Canada |
5. Rose Green and Meimei _____. |
[ ] |
A. are friend B. aren't friends C. are twins D. are Chinese |