导致Meckel憩室显像假阳性的原因()
A．阑尾炎
B．憩室内炎症
C．异位胃粘膜壁细胞数量少
D．异位胃粘膜壁细胞坏死
E．以上都不是
参考答案：A
根据句意，用括号内所给单词的适当形式填空。
1. They _____ (not have) a school trip.
2. How much _____(be) these green pants?
3. Sunday is the _____ (one) day of a week.
4. My cousin _____ (have) a cat.
5. My Birthday is October _____ (twenty).
6. _____ (Tina) birthday is May 23rd.
7. The boy is fourteen _____ (year) old.
8. Linda wants_____ (have) a party at home.
9. My friend is an English girl. But she speaks _____ (China) very well.
10. The _____ (nine) month of the year is September.
延长甲醇合成催化剂使用寿命的措施有哪些？
