the Internet is of great help. I don't think it's a good idea to spend too much time on it.
| A． | If | B． | While | C． | Because | D． | As |
—Is the chemistry experiment easy? —______. I’ll just do my best.
| A．I think so | B．Certainly | C．Not a little | D．Anything but |
The number 5.12 is a special number,__ ,I think, that will be remembered by Chinese people forever.
| A．what | B．it | C．which | D．one |
The country has already sent up three unmanned spacecraft, the most recent__at the end of last March.
| A．has been launched | B．having been launched |
| C．being launched | D．to be launched |
_____ for his action on the playing field ,but he is also famous for the things that he does off the playing field.
| A．Not he is only known | B．Not only is he known |
| C．Only is he known not | D．He is only not known |
Nowadays, cellphones have features such as games ,music and calendars and more new functions___.
| A．are added | B．have added | C．are being added | D．have been added |