chemistry
| A．machine | B．touch | C．school | D．kitchen |
Some people got injured and some even got killed in the floods in Beijing in the summer of 2012, which made us ______.
| A．comfortable | B．nervous |
| C．calm | D．upset |
The head teacher told us that most of the students ______ born in the 1990s.
| A．were | B．had been |
| C．are | D．have been |
______ prevent her from attending the meeting, he took away the key to their car ______.
| A．So as to; by mistake |
| B．In order to; on purpose |
| C．In order to; to her surprise |
| D．So as to; in surprise |
This is the first time that the Chinese woman astronaut ______ sent into space.
| A．was | B．Is |
| C．had been | D．has been |
It is reported that the countries attending the opening ceremony of the London Olympics ______ 229.
| A．added to | B．added up |
| C．added up to | D．add |