2. 外语
  3. It is【C1】______ spring, and all of us are thankful to see trees blooming and birds 【C2】______ to nest again. Just about all of

It is【C1】______ spring, and all of us are thankful to see trees blooming and birds 【C2】______ to nest again. Just about all of

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问题    It is【C1】______ spring, and all of us are thankful to see trees blooming and birds 【C2】______  to nest again. Just about all of us have plenty of limbs, trees, and yard to do throughout the maintenance next few weeks.
   Caution! Grey, red, fox and flying squirrels and a variety of songbirds and rabbits are nesting. In some areas baby squirrels and rabbits are already showing up in rehabilitation.
     Squirrel【C3】______ are very obvious; they are large and secured in the fork of tree branches. Just because you listen and don’t hear any cries coming from the nest area, that means nothing. Flying squirrels make their nests in cavities.
     Wildlife withdraws and tries to make as little noise as possible to keep from attracting a【C4】______ attention. Man is the biggest predator any wild creature will ever face.
     As you drag brush from gardens and yards, be alert and observant for【C5】______  bunnies. Brush piles are favorite spots for rabbits to breed under.
     During the past couple of weeks, homeowners cleaning up after numerous snow, rain and wind storms have called for help with baby squirrels nesting in trees that has to be 【C6】______  
     What can you do? If a tree is a danger to human and has to be cut, arrange for an experienced tree climber to【C7】______  the baby squirrels before it is cut. Most professional tree trimmers will happily assist, if asked. After the tree is on the ground, if possible, create a leaf nest lined with soft cloth on the ground and place the babies in it, and leave the immediate area. Stay close enough to observe and rescue the babies【C8】______  a neighborhood cat come by to investigate.
     The mother squirrel will probably return to【C9】______   her babies and move them to a new nest.    The babies will probably be moved to a【C10】______ one. If the mother squirrel has to build a new nest, she can do【C11】______in a matter of hours.
     When she comes to retrieve the babies, she will seemingly bite them in the stomach area. They put their tiny, sharp claws around her head and【C12】______  while she carries them to the new nest. The building of a new nest and moving of her clutch may【C13】______  no more than a few hours.
     Should the mother squirrel not return, and you need help in saving the baby squirrels.
     Native wildlife is protected by law. A licensed rehabiliator is the only person that can【C14】______  orphan, native wildlife to raise and release. During March and April, baby squirrels, rabbits and owls may need your help to survive. The rule of thumb is【C15】______  until you are absolutely sure a baby is an orphan!
     It takes all of us human and wild working together to survive.
     Remember. Make sure the baby is really an【C16】______ Place the babies in a shallow box with plenty of leaves and soft cloth to keep them【C17】______  Do not use terry cloth toweling【C18】______   the threads become entangled in the sharp baby【C19】______   Do not feed! Do not allow children to handle the baby squirrels or bunnies. Stress from unnecessary【C20】______  may prove deadly to the babies!
【C2】
选项 A、return
B、returning
C、returned
D、to return
答案B
解析 根据句型，see someone or something doing：看到某人或者某物在干什么。这里是两个并列的现在分词结构blooming和returning。
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