The problem remains ________ the rescue teams could arrive in time.

ble, but it may not happen

A) inclines B) maintains C) sounds D) remains

A.gap

B.vacancy

C.break

D.opening

A __________ to this problem is expected to be found before long.

A) result B) response C) settlement D) solution

This article _____ more attention to the problem of cultural interference in foreign language teaching and learning.

A) cares for B) applies for C) allows for D) calls for

A.prospects

B.respects

C.aspects

D.expects

nd before long.

A) result B) response

C) settlement D) solution

m of pollution in the country, but halfway in her speech, she suddenly _________ to another subject.

A) committed B) switched

C) favoured D) transmitted

假设工资率是16美元/小时，产品价格是2美元。每小时产出和劳动投入的关系如下:

(1)找到利润最大化时的劳动数量。

(2)假设产品价格保持2美元不变，但工资率上升到21美元。找到新的利润最大化的劳动数量。

(3)假设产品价格增加到3美元而工资保持在16美元。找到新的利润最大化的劳动数量。

(4)假设产品价格2美元和工资率16美元保持不变，但是技术进步导致任何劳动投入水平下的产出都增加25%。找到新的利润最大化的劳动数量。

Suppose that the wage rate is $ 16 per hour and the price of the products $ 2. Values for output and labor are in units per hour.

a. Find the profit - maximizing quantity of labor.

b. Suppose that the price of the product remains at S2 but that the wage rate increases to $21. Find the new profit - maximizing level of 1

c. Suppose that the price of the product increases to $3 and the wage remains at S 16 per hour. Find the new profit - maximizing L.

d. Suppose that the price of the product remains at $2 and the wage at $ 16, but that there is a technological breakthrough that increases output by 25 percent for any given level of labor. Find the new profit - maximizing L

y home, when she found herself _______ in front of his company.  A. standing     B. stand     C. stood      D. to stand

The problem ofintemet crime__________ (近些年来引起了广泛关注)

 go on with our cause.A. principle     B. principal     C. primarily     D. chiefly