单项选择题

Passage Two Questions 19 to 21 are based on the passage you have just heard.

A．Tour Ecuador’s Andes Mountains.
B．Earn an annual income of $2800.
C．Purchase a plot to build a home on.
D．Send their children to school.

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填空题

Avoiding over-consumption of sugar can improve people’s health as well as save medical expenses.

单项选择题

37（）

A.accelerating
B.actually
C.closely
D.contemporary
E.courses
F.critical
G.declining
H.degrees
I.especially
J.future
K.led
L.met
M.procedures
N.proportions
O.sphetes