[单项选择]______, electrons are still smaller.
A. As atoms small are
B. As atoms smaller as
C. Small as atoms are
D. Smaller atoms as are

[单项选择]______, electrons are still smaller.
A. As atoms small are
B. As atoms smaller as
C. Small as atoms are
D. Smaller atoms as are

[单项选择]Besides the electrons, an atom also contains positive electrical particles（）total charge must be equal to that of the electrons.
A. which
B. that
C. whose
D. of which

[单项选择]Is Mike still doing his homework

[单项选择]In academic promotions research universities still attach more importance to research partly be cause ______.
A. research improves the quality of teaching
B. students who want to be challenged appreciate research professors
C. it is difficult to evaluate teaching quality objectively
D. professors with achievements in research are usually responsible and tough

[单项选择]These veterans still remember the rigorous discipline and hard training in these camps.
A. strict
B. vigorous
C. loose
D. imaginary

[单项选择]The sea was calm and still.
A. quite
B. quiet
C. yet
D. rough

[单项选择]Americans are still gaining weight though reducing the fat intake because __________.
A. they eat regular cookies instead of nonfat ones
B. they eat too much
C. they eat too much sugar
D. they eat low-fat crackers, soups

[单项选择]Research universities still attach importance to research in academic promotions partly because ______.
A. professors with academic achievements are usually responsible and tough
B. it is difficult to conduct objective evaluation of teaching quality
C. top students who want to be challenged appreciate research professors
D. research helps to improve the effectiveness of teaching

[单项选择]

Psychologists still wonder if some personality traits are inborn.（）

A. interminable
B. inadvertent
C. innate
D. inevitable

[单项选择]It seemed incredible that people would still want to play football during a war.
A. encouraging
B. moving
C. unbelievable
D. enlightening

[单项选择]

Digital photography is still new enough that most of us have yet to form an opinion about it, much less (1) a point of view. But this hasn’t stopped many film and computer fans from agreeing (2) the early (3) wisdom about digital cameras—they’re neat (4) for your PC, but they’re not suit able for everyday picture-taking.
The fans are wrong: more than anything else, digital cameras are radically (5) what photography means and what it can be. The venerable medium of photography as we know (6) is beginning to seem out of (7) with the way we live. In our computer and camcorder culture, saving pictures (8) digital files and watching them on TV is no less (9) and in many ways more (10) than fumbling with rolls of film that must be sent off to be (11) .
Paper is also terribly (12) Pictures that are incorrectly framed, focused, or lighted are nonetheless (13) A. prescribing
B. adjusting
C. redesigning
D. redefining