[单选题] Most sharks feed （） fish and other animals.
A. with
B. for
C. on
D. by

[单项选择]

D
Sharks are fish. There are about 350 species of sharks. The smallest sharks are only 12. 5 cm long. The largest, the whale shark, is the world’s largest fish. It grows to about 1Sm long.
Sharks are different from other fish. For example, other fish have skeletons made of hard bones. Sharks have skeletons made of cartilage. In addition, most fish have a special organ called a swim bladder to stop them from sinking but sharks do not. If a shark does not swim constantly, it sinks. Shark babies grow inside eggs. The baby sharks are called pups.
Most sharks eat fish. Some also eat seals and other sharks. Many people are afraid of sharks be cause of their reputation as’ man-eaters’. However, there are fewer than one hundred shark attacks on humans in the world each year.
Humans are the sharks’ worst enemies. Fishermen kill them because of their valuable dorsal fins. Often, they catch a shark, cut off its fin and throw it
A. humans' friends
B. man's enemies
C. the world's largest fish
D. not the same as other fish

[单项选择]How can sharks find their quarries


A. By good sense of water waves made by quarries.
B. By good sense of smell and electrical magnetic power.
C. By good sense of light.
D. By good sense of bloo

[单项选择]Maine has ______ weather than most of the other states in the continental United States.
A. a cooler
B. the coolest
C. cooler
D. the cooler

[单项选择]Why sharks are useful for humans.*
A. Their tasty meat.
B. The principle of their defense system against disease.
C. Their solid skin.
D. The principle of their birth modes.

[单项选择]In which point some sharks are similar with humans


A. Bone structure.
B. Smell ability.
C. Birth mode.
D. Recover ability against diseas

[单项选择]According to the passage, we need sharks because of the following except ______.


A. they are delicious food for us
B. they are companions of human beings
C. they can help rescue human beings
D. they can help improve human health

[单项选择]FISH : SCALES::
A. limb : skin
B. foot : toe
C. vertebrate : backbone
D. insect: exoskeleton
E. branch : stem

[单项选择]A large fish was slowly swimming through the water, its tai ______ back and forth like the pendulum of a clock.


A. swung
B. was swinging
C. was swung
D. swinging

[单项选择]Do you believe that some fish can produce electricity strong enough to light a lamp or （　） run a small electric motor
A. further
B. rather
C. else
D. even

[单项选择]The fish that have developed long feelers use them to ______.
A. recognize food particles
B. collect food
C. locate food by sense of smell
D. both A and B

[多项选择]关于FISH的叙述正确的是（）。
A. FISH是原位杂交技术的一种
B. 具有荧光信号的高灵敏性和直观性特点
C. 特异性好、定位准确
D. 灵敏性高，与放射性探针相当
E. 经济、安全、探针稳定；实验周期短

[单项选择]

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 strong 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
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.

[单项选择]Who needs ESP courses most


A. Working people.
B. College students.
C. Beginners.
D. Intermediate learners.