Question 19
According to the passage, the long-billed shorebird is expected to be more likely than the short-billed shorebird to have trouble migrating because
A. it is more vulnerable to the effects of organochlorines
B. it typically is unable to differentiate between a foreign ecosystem and a familiar one
C. it stops feeding before it is fully satiated
D. it grazes in parts of the mudflat in which the surface is known to have a higher concentration of organochlorines
E. it digs deeper into the earth and is therefore more likely to encounter toxins
我的答案： 无
Question 19
According to the passage, the long-billed shorebird is expected to be more likely than the short-billed shorebird to have trouble migrating because
A. it is more vulnerable to the effects of organochlorines
B. it typically is unable to differentiate between a foreign ecosystem and a familiar one
C. it stops feeding before it is fully satiated
D. it grazes in parts of the mudflat in which the surface is known to have a higher concentration of organochlorines
E. it digs deeper into the earth and is therefore more likely to encounter toxins
我的答案： 无