A.they send their children back to school
B.they still make their children continue working
C.they have their children work even harder
D.they themselves continue their schooling

A.teaching is the highest-paid career
B.there are a lot of good universities
C.there is a lack of good universities
D.no other careers are better paid than teaching

A.an Indian education satellite
B.the projects to computerize education in developing countries
C.the computerization of African education
D.President Bill Clinton who bought a lot of computers

A.One
B.Two  
C.Three  
D.Four

A.
B.
C.
D.

A.Ở mức phù hợp nhất để sinh vật thực hiện chức năng sống tốt nhất.
B.Ở đó sinh vật sinh sản tốt nhất.
C.Giúp sinh vật chống chịu tốt nhất với môi trường.
D.Ở đó sinh vật sinh trưởng, phát triển tốt nhất.

A.mARN và prôtêin.
B.mARN.
C.ADN.
D.prôtein.

A.AABb.
B.aabb.
C.AaBb.
D.AaBB.

A.0,2.
B.0,8.
C.0,7.
D.0,6.

A.people all know that education is very important all the time
B.all parents are rich enough to send their children to school
C.children have rights to get high schooling
D.children have to work instead of going to school