endanger ，observe，search for，recover ，threat，make out，intend，remove，reduce，binoculars

（1）This discovery was the result of years' careful ，thought and study.
（2）Since we were so far away，we could only a giant figure walking elegantly on the plain.
（3）Joint efforts are needed to the risk of animals becoming endangered.
（4）More nature reserves should be set up for the animals.
（5）A recent research shows that bamboo forest more quickly from land to forest than other forests.
（6）If you happen to find a nest of honey bees，call a local beekeeper for help.Not only will they the bees but can also save an endangered species，since honey bees are disappearing rapidly.
（7）Water pollution poses（造成）a to the continued existence of some fishes.
（8）Since China's Northeast Tiger and leopard （豹）populations are distributed（分布）in Jilin and Heilongjiang provinces，the two provinces to build a National Northeast Tiger and Leopard Park.
（9）Scientists spend much time rare species before they really disappear.
（10）With the help of the ，they saw a bird that they had never seen before.

【考點(diǎn)】名詞詞義辨析；動(dòng)詞詞義辨析；動(dòng)詞短語(yǔ)．

【答案】observation；make out；reduce；endangered；recovers；remove；threat；intend；searching for；binoculars