We will try to save the manatees改为现在进行时

description 描写
discover 发现

food既有不可数也有可数,不过大多数用时是不可数的,只有做为种类才可数,即一种食品.
一天所吃的食物不可能是一种食品,所以此题中food用作表示几种食物,应用foods.

小题1:pounds
小题2:shake
小题3:be watered
小题4:light
小题5:appear
小题6:building
小题7:scientific
小题8:villagers
小题9:spare
小题10:weighs


小题1:考查名词的复数。pound“英镑”，本句用复数形式。故填pounds。
小题2:考查固定短语。shake hands“握手”。故填shake。
小题3:考查被动语态。flower是动作的承受者，故用被动语态。故填be watered。
小题4:考查动词。light“点火”。不定式后接动词原形。故填light。
小题5:考查动词。appear“出现”。Will后接动词原形。故填appear。
小题6:考查again“反对”，是介词，后跟动名词。故填building。
小题7:考查词性转换。science的形容词是scientific。Scientific studies“科学研究”。故填scientific。
小题8:考查名词复数。villager“村民”，根据many可知，用复数形式。故填villagers。
小题9:考查固定短语。in one’s spare/ free time“在某人的空闲时间”。故填spare。
小题10:考查主谓一致。主语是第三人称，故谓语用单数。Weigh是动词。故填Weighs。

我们正在尝试拯救海牛

它的本意是“我们正在试图拯救海牛!”
但这句话可能是一篇文章里的一句带有寓意的话.你可以根据上下文理解的!
但不可能真是“我们正在试图拯救海牛!”这个意思!

小题1:pounds
小题1: Waiting
小题1:visited
小题1:outgoing
小题1:happening

略

Manatee Facts
Description:West Indian manatees are large,gray aquatic mammals with bodies that taper to a flat,paddle-shaped tail.They have two forelimbs,called flippers,with three to four nails on each flipper.Their head and face are wrinkled with whiskers on the snout.The manatee's closest relatives are the elephant and the hyrax (a small,gopher-sized mammal).Manatees are believed to have evolved from a wading,plant-eating animal.The West Indian manatee is related to the West African manatee,the Amazonian manatee,the dugong,and Steller's sea cow,which was hunted to extinction in 1768.The average adult manatee is about 10 feet long and weighs between 800 and 1,200 pounds.
Habitat and Range:Manatees can be found in shallow,slow-moving rivers,estuaries,saltwater bays,canals,and coastal areas — particularly where seagrass beds or freshwater vegetation flourish.Manatees are a migratory species.Within the United States,they are concentrated in Florida in the winter.In summer months,they can be found as far west as Texas and as far north as Massachusetts,but summer sightings in Alabama,Georgia and South Carolina are more common.West Indian manatees can also be found in the coastal and inland waterways of Central America and along the northern coast of South America,although distribution in these areas may be discontinuous.
Behavior:Manatees are gentle and slow-moving animals.Most of their time is spent eating,resting,and traveling.Manatees are completely herbivorous.They eat a large variety of submerged,emergent,and floating plants and can consume 10-15% of their body weight in vegetation daily.Because they are mammals,they must surface to breathe air.They may rest submerged at the bottom or just below the surface of the water,coming up to breathe on an average of every three to five minutes.When manatees are using a great deal of energy,they may surface to breathe as often as every 30 seconds.When resting,manatees have been known to stay submerged for up to 20 minutes.Manatees can swim up to 20 miles per hour in short bursts,but they usually only swim about three to five miles per hour.

,对,weigh 是动词,意思是；有,重量

这里曾经有很多海牛.
manatees 海牛(水生哺乳动物,体宽扁,尾圆,有鳃状肢)

A
A
第一个空应该是A吧……
曾经有很多海牛,但是现在他们已经是濒临灭绝的动物了……

manatees are about 10 feet long 海牛大约有10英尺长

less and less
是不可数的,从前面is就可以知道是不可数,所以用less and less