更多"African elephants have been slaught"的相关试题:
[单项选择]African elephants have been slaughtered at alarming (1) over the past decade, large ly because they are the primary source of the world’s ivory. Their population has been dwindled from 1.3 million in 1979 to just 625,000 today, and the rate of killing has been (2) in recent years because many of the older, bigger tusked animals have already been (3) "The poachers now must kill times (4) many elephants to get the same quantity of ivory," explained Curtis Bohlen, senior vice president of the World Wildlife Fund.
(5) its record on the environment has been spotty so far, the government last week took the (6) in a major conservation issue by (7) a ban on ivory imports into the US. The move came just four days after a consortium of (8) groups, including the World Wildlife Fund and Wildlife Conservation International, called for that kind of (9) , and it made the US the first nation to (10) impo
A. head
B. lead
C. first
D. advance