5. To produce active chips,the problems designers need to solve are as many as — —
A two B three
C four D five
1.D细节理解题。根据第二段第一、二句“…if your child has fallen and needs immediate help. Once paramedics arrive ,the chip will also be able to tell the rescue workers…”得出此结论。
2.A猜测词义题。根据第四段第一句“To some ,this may…”得出此结论。
3.D推论题。根据第七段最后一句话“It’s a double-edged sword.”得出此结论
4.D细节理解题。根据第十一段第一句“The company says it has recently…”得出此结论。
5.C细节理解题。根据文章最后两段叙述得出此结论。
责任编辑：虫虫
您现在的位置：