【简答题】阅读理解。 When should a child start learning to read and write? This is one of the questions I am most frequently asked. There is no hard and fast rule, for no two are alike, and it would be wrong to set ...
【单选题】Nanotechnology, according to its fans, will jump-start a new industrial revolution with molecular-sized structures as complex as the human cell and 100 times stronger than steel. The new technology tr...
A.
nanotechnology can not continue in existence for a long time
B.
nanotechnology will be the only activity that provides entertainment
C.
nanotechnology will become the most influential in the future
D.
nanotechnology will become the most beneficial thing someday