介绍:
1．If their habitat is threatened or they cannot find enough food，their numbers may ________.
As a result these endangered animals may even ________.
A．increase；die down B．decrease；die out
C．increase；die of D．decrease；die from
2．Why are they ________ disappearing?
A．endangered B．dangerous
C．in danger D．in danger of
3．Daisy had always longed ________ endangered species of wildlife.
A．to help B．for help C．help D．to helping
4．In relief Daisy ________ laughter.
A．broke in B．broke out C．burst into D．burst out
5．I’m ________ myself from mosquitoes.
A．preventing B．stopping C．keeping D．protecting
6．When I find a millipede insect，I rub it over my body.It ________ a powerful drug which ________ mosquitoes.
A．contains；effects B．includes；effects
C．contains；affects D．includes；efforts
7．Now 20 percent of the wildlife park ________ used in this way.
A．is B．was C．are D．were
8．What should be done to punish people who do ________ to the animals?
A．good B．bad C．harm D．difference
9. Cattle’s two ____ help them to digest food and their fur to keep them warm.
A. stomaches B. heart C. stomachs D. hearts
10. I’ll finish the job ____ I come across great difficulty.
A. however B. even though C. no matter D. as though
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