单项选择题

A．Collecting objects on the beach.
B．Creating models of different shapes.
C．Mapping currents in the ocean.
D．Tracking water pollution.
<上一题 目录 下一题>
热门 试题

单项选择题
A．To commemorate a historic flight,B．To try out eight new balloons.C．To recruit balloonists from all over the United States.D．To test whether helium (氦气) balloons are better than hot-air balloons.
A．To commemorate a historic flight,
B．To try out eight new balloons.
C．To recruit balloonists from all over the United States.
D．To test whether helium (氦气) balloons are better than hot-air balloons.
单项选择题
A．He’s excited that his mother-in-law is coming.B．He’s thinking about quite a number of things.C．He’s not feeling well lately.D．He’s looking for a new apartment.
A．He’s excited that his mother-in-law is coming.
B．He’s thinking about quite a number of things.
C．He’s not feeling well lately.
D．He’s looking for a new apartment.
相关试题