We should learn from various civilizations, ancient and modern, and benefits from them.
| A．conclude | B．suspect |
| C．absorb | D．announce |
Daniel’s father left home in 2001，andever since．
| A．has not heard of | B．had not heard of |
| C．has not been heard of | D．had not been heard of |
Can you tell me Steve is from America or not？
| A．that | B．whether | C．what | D．where |
He was puzzled by this phenomenon. He began to try every approach _________ the best way of working it out.
| A．known to find | B．knowing to find | C．known finding | D．knowing finding |
He was puzzled by this phenomenon. He began to try every approach _________ the best way of working it out.
| A．known to find | B．knowing to find | C．known finding | D．knowing finding |
All the workers think it very necessary to safety regulations and workshop
rules.
| A．campaign | B．inspire | C．confuse | D．observe |