薄涂型防火涂料表面裂纹宽度不应大于（ ）mm，厚涂型防火涂料表面裂纹宽度不应大于（

阅读理解。

     Some days before Mother's Day, the teacher wanted to know how his students were going to show

their love to their mothers. Some of the students came from far away to study here. "Are you going home

to see your mother during the holiday?" the teacher asked one of them.

     The student answered, "I have no time to go home because I'm going to get ready for the exam. But

I'll write a letter to my mother." "Then which do you think is more important (更重要), your mother or the

exam?" "Of course the exam is more important," answered the student. "My mother is always saying so."

根据短文内容，判断正﹙T﹚误﹙F﹚。

( )1. All children should (应该) show their love to their mother on Mother's Day.

( )2. The students would have a holiday on Mother's Day.

( )3. The student told his teacher that he wouldn't go home that day because his home was far away.

( )4. The student didn't love his mother, so he wouldn't go back home.

( )5. The mother thought the exam was very important for her son.

— How will she deal with the work?

— She doesn't want to do it by herself. She wants to ask someone else to do it,            . [ ]

A. yet

B. instead

C. too

D. either

11个月男孩，近3天腹泻，稀水样便每日5~8次，无黏液脓血。病初曾呕吐，1天后吐止。无发热，昨晚起大便次数减少，但出现阵发性剧烈哭闹，又呕吐3次，今晨大便一次，带暗红色物而来诊。查体见患儿营养发育佳，但精神不振，痛苦面容，屈膝缩腹。

对于该患儿马上需要做的是（）

A.请感染科会诊除外菌痢

B.腹部超声检查

C.腰穿脑脊液化验除外颅内感染

D.头颅CT检查除外颅内出血

E.核素扫描查异位胃黏膜

But for the heavy rain, the sports meetwould be held last Wednesday.

A        B            C           D

将5g一氧化碳和二氧化碳的混合气体与足量的氧化铜加热充分反应后得到6.4g金属铜，求原混合气体中碳元素的质量分数？