A child of ten who is two years retarded has a mental age of ______.
A.nine
B.ten
C.eight
D.twelve
He is a(n) ______ and well-behaved child, but his parents worry about him for he talks too little.
A.obedient
B.transient
C.conscious
D.passionate
If a child born with low intelligence, he can ______ .
A.never become a genius
B.exceed his intelligence limits in rich surroundings
C.still become a genius if he should be given special education
D.not reach his intelligence in his life
A.since
B.but
C.even though
D.so
A、had worked
B、has worked
C、was working
D、has been working
A.has died
B.so
C.has lived
D.since then
B. toffee was his favorite sweet
C.he never ate toffees; he only looked at them
D.he found more pleasure in looking at the toffee before eating it than eating it outright