设在危险物或危险区域的南方，船舶通过该标时应从南方通过，此标为（）。A.北方位标 B

Mark began to introduce the guest speaker to the listeners, but then stopped for a while. He had forgotten her name.

Barbara hid her valuable things when she went on vacation. When she came back, she couldn’t remember where she’d put them.

Perhaps you’ve had such experiences like these. Most people have. But most of them haven’t realized that they have a memory problem. Neither do they know a simple but important fact: Memory can be improved. If you just accept that, the following will show you how.

First, relax. If you are over worried about something, you’ll forget it. If you keep telling yourself that your memory is bad, your mind will come to believe it and you won’t remember things. When you forget something, don’t follow up with saying like “Oh, my god! I always forget things! ” Such words will have a bad result on you and your memory.

But relaxing isn’t enough. To improve your memory, you’ll need to take an active role. Like your body, your memory can be made strong through exercise. Look for opportunities to exercise your memory. For example, if you’re learning a language, try to actively remember a lot of new words.

If you don’t take notice of things actively, you won’t remember them. So, you can make pictures of what you see in your mind every day. For example, don’t just put your keys down! If you want to find them again, make a mind picture of the place where you’re putting them.

小题1:The first two paragraphs just tell us ________.

A．examples of memory problems

B．Barbara was a very rich person

C．language problems of two persons

D．Mark often forgot his friends’ names小题2:When you forget things, you ________.

A．must be too careless

B．must accept the fact

C．shouldn’t lose confidence in your memory

D．should keep telling yourself that your memory is bad小题3:The underlined word “opportunities” in the fifth paragraph means “________.”

A．chances

B．doctors

C．places

D．projects小题4:According to the article, ________ can make your memory better.

A．doing sports every day

B．talking to your friends

C．realizing your memory problems

D．making mind pictures of what you see小题5:The purpose of the article is to help you________.

A．introduce the guest

B．improve your memory

C．remember new words

D．forget unhappy things

简述血尿提示的出血部位（尿三杯试验）？

肝炎病毒基因组为DNA的是

A．甲型肝炎

B．乙型肝炎

C．丙型肝炎

D．丁型肝炎

E．戊型肝炎

The teacher is ____ _angry ______say a word.[ ]

A. too; and

B. too; not

C. very, to

D. too, to

具有破坏微管结构的特异性药物是（）

A.秋水仙素

B.细胞松弛素

C.鬼笔环肽

D.紫杉醇