Câu hỏi: Because blood from different individuals may different in the type of antigen on the surface of the red cells and the type of antibody in the plasma, a dangerous reaction can occur between the donor and recipient in a blood transfusion.

A. Because

B. different

C. can occur

D. and

Câu 1: In the early 1900's, Pennsylvania's industries grew rapidly, a growth sometimes accompanied by disputes labor.

A. the early 1900’s

B. industries

C. accompanied by

D. labor

Câu 2: How much times did Rich and Jennifer have to do the experiment?

A. much

B. did

C. have to

D. experiment

Câu 3: It is interesting to compare the early stylized art forms of ancient civilizations to the modern abstract forms of art.

A. interesting

B. to compare

C. of

D. to

Câu 4: Looking from afar, the village resembles a small green spot dotted with tiny fireballs.

A. Looking

B. the village

C. dotted

D. fireballs

Câu 5: When many of my friends take a shower in the morning, I usually take one before bed.

A. When

B. many of my friends

C. one

D. before bed

Câu 6: For the first time in the history of the country, the person which was recommended by the president to replace a retiring justice on the Supreme Court is a woman.

A. which

B. was recommended

C. to replace

D. retiring