SCIENTISTS CHOSE TWINS FOR THEIR STUDY BECAUSE .A. EACH TWIN HAS THE S...

24: - DE THI OLYPMPIC DAI HOC
Tiếng Anh DE THI OLYPMPIC DAI HOC

24: Scientists chose twins for their study because

.

A. each twin has the same environment as his/her twin

B. they are born into the same family, hence the same upbringing

C. they have the same economic background and hence the same opportunities

D. they have the same genetic background, usually with similar intelligence