Babies are interested in ______ they find and are likely to put it into their mouths.
| A．no matter what | B．no matter which | C．whatever | D．whichever |
No one believes the small dark lab is ___ home to so many great inventions at___ first sight.
| A．the; the | B．不填；the | C．the；不填 | D．不填；不填 |
Fleming discovered penicillin almost by______.
| A．experiment | B．hand | C．accident | D．theory |
I really don’t understand how he can ______away with cheating.
| A．make | B．run | C．steal | D．get |
This year, many Chinese people turned to flowers instead of paper money to have a green Tomb-sweeping Day ______ memory of their lost relatives.
| A．on | B．in | C．for | D．to |