After the new technique was applied to production, the factory has produced ______ over the same period last year.
| A．many cars twice as | B．twice as many as cars |
| C．twice cars as many as | D．twice as many cars as |
Doctor Smith has made another wonderful discovery, _______ great importance.
| A．which I think is of | B．which I think it is of |
| C．which is I think | D．I think which is |
—Flora has made much progress these days.
—, and ___________.
| A．So has she; so you have | B．So she has; so have you |
| C．So has she; so have you | D．So she has; so you have |
The news _______ Li Jianrou won the first gold medal for China in the Sochi Olympics was reported in yesterday’s newspaper.
| A．which | B．when | C．what | D．that |
We should look up to _________ lend a hand to the people in trouble.
| A．whoever | B．those who | C．whomever | D．no matter who |
A new _______to teaching English is being used here, and it has proven to be very helpful to the students.
| A．way | B．system | C．approach | D．method |