Do you like seahorses? What do you know about them?
The seahorse is actually not a horse but a fish, and much smaller than any regular horse. In general, a seahorse is about an inch long. It is a beautiful fish that likes warm waters, swims upright (直立的), and looks a little like a chess piece.
Seahorses are an unusual kind of animal because the males (雄性) give birth to babies. Mating (交配) takes place in cooler waters on spring and summer nights with a full moon. The females (雌性) put their eggs into the bodies of the males, and the males give birth to baby seahorses.
The seahorse can use each eye separately, which allows it to search for food without moving the rest of its body. Seahorses situate themselves near deep, fast-running channels rich in plankton, a kind of life on which they feed. They can catch food from an inch and a half away. Seahorses can change from gray or black to yellow or purple within seconds to fit in with their surroundings, and in this way escape from most of their enemies.
One of the surprising facts about seahorses for most people is that they are vertebrates (脊椎动物). They can turn and curl freely, and like to swim in pairs connected by their tails. Their tails are powerful, and they can use them to grasp the surrounding seaweed (海藻) to keep themselves from being swept away. So seahorses are usually found in warm water filled with seaweed.
Now that you know all these facts about seahorses, don’t you find them more interesting?
【小题1】We can learn from the passage that seahorses .A．are beautiful, and live on seaweedB．are as big as regular horses C．live near deep channels D．like to be alone【小题2】The third paragraph tells us that .A．male seahorses lay eggsB．seahorses mate in spring or autumnC．male seahorses give birth to babiesD．seahorses mate in warmer waters at night【小题3】Which of the following protects seahorses from being eaten by their enemies?A．Their fast speed of swimming.B．Their ability to change colours.C．Their unique eyes.D．Their strong tails.【小题4】Which of the following can replace the underlined word grasp?A．Eat.B．Hold.C．Make.D．Handle.C
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(答案→)C
解析：文章主要讲述了有关海马这种海洋生物的一些知识。海马其实不是马，它比马小的多。雄性海马负责生育宝宝，海马以浮游生物为生，它们能变换身体颜色来逃过天敌。
【小题1】根据第四段“Seahorses situate themselves near deep, fast-running channels rich in plankton”可知，海马生活在富含浮游生物的较深的、快速流动的水域，故选C。
【小题2】根据第三段“Seahorses are an unusual kind of animal because the males (雄性) give birth to babies.”可知，第三段讲的是，雄性海马负责生育宝宝，故选C。
【小题3】根据第四段“Seahorses can change from gray or black to yellow or purple within seconds to fit in with their surroundings, and in this way escape from most of their enemies.”可知，海马通过快速变换身体颜色来躲避天敌，故选B。
【小题4】根据“...to keep themselves from being swept away”可知，grasp在此意为“抓住”，hold与其同义，故选B。