【简答题】You needn’t arrive so early
. Here “needn’t” means . prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>A. mustn ’ t B. can ’ t C. had better
not D. don ’ t have
to prefix="o" ns="...
【单选题】It ́s 10 pm. You may not know where your child is, but the chip does. The chip will also know if your child has fallen and needs immediate help. Once doctors arrive, the chip will also be able to tel...
A.
chips are usually used to locate lost children
B.
chips are more convenient than credit cards
C.
chips will soon be useful in many aspects of daily lives
D.
chips will bring out the issue of abuse of personal privacy