PLC-5/40E在（）状态时，程序器在工作，你可以进行存储或传输，但没有把握时，最

如果向东运动5m记作+5m，那么向西运动3m应记作( )

原发性肝癌最早最常见的转移途径()

A．肝内血行转移

B．肝外淋巴管转移至肺

C．肝外淋巴管转移至锁骨上淋巴结

D．直接蔓延至胸腔

E．直接扩散到腹腔

Everyone knows that fish is good for health.  16  But it seems that many people don’t cook fish at home. Americans eat only about fifteen pounds of fish per person per year, but we eat twice as much fish in restaurants as at home. Buying, storing, and cooking fish isn’t difficult.  17  This text is about how to buy and cook fish in an easy way.

18   Fresh fish should smell sweet: you should feel that you’re standing at the ocean’s edge. Any fishy or p smell means the fish isn’t fresh.   19  When you have bought a fish and arrive home, you’d better store the fish in the refrigerator if you don’t cook it immediately, but fresh fish should be stored in your fridge for only a day or two. Frozen fish isn’t as tasty as the fresh one.

There are many common methods used to cook fish.   20   First, clean it and season it with

your choice of spices(调料). Put the whole fish on a plate and steam it in a steam pot for 8 to 10

minutes if it weighs about one pound. (A larger one will take more time.) Then, it’s ready to serve.

16（）

A. Do not buy it.

B. The easiest is to steam it.

C. This is how you can do it.

D. It just requires a little knowledge.

E. The fish will go bad within hours.

F. When buying fish, you should first smell it.

G. The fats in fish are thought to help prevent heart disease.

属于脂肪动员的产物是（）

A．甘油

B．3-磷酸甘油

C．3-磷酸甘油醛

D．1，3-二磷酸甘油酸