It would be unfair to clone any extinct animals they were to live in a zoo.
| A．or | B．if | C．but | D．whether |
Because the children keep interrupting her whenever she reads a book, she is always _____ her place.
| A．loosing | B．missing | C．losing | D．looking for |
Russia's withdrawal of its experts from China did not strangle (压垮) the Chinese people; _____ it stirred up their enthusiasm for greater exertions.
| A．on the other hand | B．on the contrary |
| C．to the contrary | D．in consequence |
The shop-assistant was straight with his customers. If an article was of _____ quality, he'd tell them so.
| A．humble | B．minor | C．inferior | D．awkward |
The beauty of the place is more than I can describe. I am sure whoever sees it will _____ its charm.
| A．appeal to | B．stick to | C．keep to | D．yield to |
He did not find a job yet because he had no _____ to men who could help him.
| A．approach | B．application | C．access | D．approval |