What is meant by the term TOPPING THE BOOM?（）
A: Lowering the boom
B: Raising the boom
C: Spotting the boom over the deck
D: Swinging the boom athwartshi
A: Lowering the boom
B: Raising the boom
C: Spotting the boom over the deck
D: Swinging the boom athwartshi
举一反三
- Boom! Boom!Boom! A Series____explsions shook the vally.
- Research is under way to （） A: discover what causes the sonic boom B: find a means of eliminating the sonic boom C: produce the sonic boom at low altitudes D: reduce the sonic boom to tolerable levels
- The minerals boom has brought about an economic boom, which in turn has meant that real estate values have ______ to record levels. A: rose B: raised C: risen D: been raising
- the economic boom of
- 4. baby boom