Question

________ the global economy is showing signs of recovery, many developing countries are still suffering

1. A.
   As
2. B.
   Where
3. C.
   How
4. D.
   While

Answer 1

D
试题分析：句意：虽然全球的经济有复苏的迹象，许多发展中国家仍然处于困境。表示“虽然”且置于句首的词有：while, although, though。as有“虽然”的意思，但必须用于倒装句。如：child as he is , he knows a lot. 倒装句中除了as，还可以用though。
考点：考查连词while表示“虽然”。