下列何种情况不宜妊娠：()A.心功能Ⅲ级、Ⅳ级  B.活动性风湿病或伴有细菌性心内膜

根据短文内容判断下列句子的正误，正确的用“A”，错误的用“B”。

       Mr and Mrs Long are very forgetful. For example, Mr Long sometimes goes to his office for work

on Sunday morning, for he thinks it is Monday. And Mrs Long sometimes forgets to cook supper for the

family.

       One summer they plan to fly to New York for a visit. They get to the airport only ten minutes before

the plane leaves. So time is short. But suddenly Mrs Long says she must tell Linda, their daughter, not to

forget to lock the front door when she leaves for school in the morning.  As Linda is then at school, they

can't reach her on her phone. So the couple hurry to the post office. Mrs Long writes a short note to

Linda, while Mr Long buys a stamp and an envelope. Soon the note is ready. They put the stamp on the

envelope quickly and drop it in the mailbox. But suddenly Mrs Long begins to cry. The short note to her

daughter is still in her hand.  She puts their plane tickets in the envelope.

( )1. Mr and Mrs Long often forget to do something.

( )2. Mr Long goes to work every day.

( )3. Mrs Long never forgets to cook for the family.

( )4. The couple want to see their daughter in New York one summer.

( )5. Mrs Long puts their tickets in the envelope at last.

开行专运列车时，信号设备正常使用，列车按（）行车。

What time do you get up________ Sunday morning? [ ]

A．on              

B．in              

C．at            

D．for

我国《民族区域自治法》第十九条、第二十条规定：民族自治地方的人民代表大会有权依照当地民族的政治、经济和文化的特点，制定自治条例和单行条例。自治区的自治条件和单行条例，报全国人民代表大会常务委员会批准后生效。上级国家机关的决议、决定、命令和指示，如有不适合民族自治地方实际情况的，自治机关可以报经该上级国家机关批准，变通执行或者停止执行。这表明，民族自治地方的自治机关[ ]

①享有变通执行权

②可以依法根据本地实际制定相关法规

③是该地方的最高行政机关

④是自治地方的权力机关、行政机关和司法机关

A、①②

B、③④

C、①④

D、②③

固定化酶的特性与游离酶比较有哪些改变？