【C3】A．cautiousB．timidC．youngD．aggressive

【C20】A．compactedB．consumedC．strategicD．aggressive

The most aggressive of the four eastern－slope species is the lodgepole chipmunk, a feisty

The author winds up the passage with a ______ note.A．cautiousB．warningC．positiveD．humorous

The author thinks that Mr. Harris argument______.A．appears much too cautiousB．is appropria

A．cautiousB．guiltyC．unawareD．exhausted

After an unsuccessful date, a woman should______.A．be more cautiousB．be more open－mindedC．