Q39:
The survival of a rare New Zealand species of mistletoe that produces spectacular sprays of scarlet flowers is threatened both because their leaves are extremely tasty to a voracious opossum species and also because their flowers are pollinated by two species of birds whose populations are in decline.
- is threatened both because their leaves are extremely tasty to a voracious opossum species and also because their
- is threatened both because its leaves are extremely tasty to a voracious opossum species and because its
- is threatened both because its leaves are extremely tasty to a voracious opossum species and also its
- are threatened both because its leaves are extremely tasty to a voracious opossum species and its
- are threatened both because their leaves are extremely tasty to a voracious opossum species and because their
答案是B,我选了A。
想请教species of mistleteo对应的代词应该是单数还是复数? |