[阅读选择]The system has several advantages. Shepherds do not have to walk among the sheep， which tends to disturb the mother sheep that are about to give birth. Instead， they can stay inside， watching by remote control. If there is no problem， they stay away from the sheep. But when they are needed they can quickly go out to help， or to scare away foxes. The experiment is popular ‘with shepherds because it means that they do not have to spend all their time outdoors waiting for the lambs to arrive in freezing weather.
From the passage， we learn that walking among the sheep ______.
A、is more popular with shepherds than watching TV inside
B、can help the mother sheep to give birth to more lambs
C、is the best way to protect the sheep
D、usually disturbs the mother sheep that will give birth
答案解析：根据本段第二句话Shepherds do not have to walk among the sheep， which tends to disturb the mother sheep that are about to give birth.可知D项正确。
[阅读选择]Demands for stronger protection for wildlife in Britain sometimes hide the fact that similar needs are felt in the rest of Europe. Studies by the Council of Europe， of which 21 counties are members， have shown that 45 per cent of reptile(爬行类的)species and 24 per cent of butterflies are in danger of dying out.
Recent studies by the council of Europe have indicated that ______.
A、wildlife needs more protection only in Britain.
B、all species of wildlife in Europe are in danger of dying out.
C、there are fewer species of reptiles and butterflies in Europe than elsewhere.
D、many species of reptiles an butterflies in Europe need protecting.