Many scientists have been probing psychological problems. A solving B exploring C settling D handling

John is collaborating with Mary in writing an article.

    A cooperating

    B marrying

    C combining

    D arguing

A great deal has been done to，remedy the situation.

    A maintain

    B improve

    C preserve

    D protect

Many economists have given in to the fatal lure of mathematics.

    A error

    B puzzle

    C attraction

    D contradiction

The river widens considerably as it begins to turn west.

    A extends

    B stretches

    C broadens

    D bends

The secretary is expected to explore ideas for post-war reconstruction of the area.

    A deny

    B investigate

    C stress

    D create

It has been said that the Acts provided a new course of action and did not merely regulate or enlarge an old one.

    A manage

    B control

    C revise

    D outset

However bad the situation is， the majority is unwilling to risk change.

    A reluctant

    B eager

    C pleased

    D angry

The council meeting terminated at 2 O'clock.

    A began

    B continued

    C ended

    D resumed

It is laid down in the regulations that all members must carry their membership cards at all times.

    A suggested

    D warned

    C stated

    D described

Our lives are intimately bound up with theirs

    A tensely

    B nearly

    C carefully

    D closely