A．They studied variations in the appearance Of' the parent stars.B．They were able to s
A. They studied variations in the appearance Of' the parent stars.
B. They were able to see the planets with a telescope.
C. They compared the parent stars to the Sun.
D. They sent astronauts on a mission into space.
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Why do most very young children with a diagnosis of autism not have an intensive treatment？
A. Because their parents don't think it's necessary for their babies.
Because it's too expensive to receive the intensive treatment.
C. Because babies are difficult to handle at such an early age.
D. Because doctors are not sure of their skills in carrying out the treatment,
In detecting the warning signs of autism in young children, parents, schools and doctors now ______.
A. do better than in the past
B. do worse than in the past
C. haven't done sufficiently on it
D. have paid too much attention to it.
【B19】
A. in
B. up
C. to
D. from
A．Go to Paris again.B．Go somewhere else.C．Live in Paris.D．Difficult to say.
A. Go to Paris again.
B. Go somewhere else.
C. Live in Paris.
Difficult to say.
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