She will never forget her stay there __________ she found her son who had gone missing two years before.
| A．that | B．which | C．where | D．when |
In dealing with public relations, we should make every effort to prevent the______ in personality.
| A．contact | B．contrast | C．connection | D．conflict |
The environmentalists said wild goats’______ on the vast grasslands was a good indication of the better environment.
| A．escape | B．absence | C．attendance | D．appearance |
Usually a child's behavior is a ________ of his family environment.
| A．recognition | B．reflection | C．return | D．record |
I have read the material several times but it doesn't make any ________ to me.
A meaning B. importance C. sense D. significance
Don’t leave matches or cigarettes on the table within ______of little children.
| A．hand | B．reach | C．space | D．distance |