ABritain has used up almost all coal deposits
Bthe demand for British coal has declined
Cpetroleum,water power,and electric power are replacing coal for many purposes
Dthe old British mines are narrow and deep,making it difficult to sue machines fro mining.
第1题:
A 、one-thind
B、one-fourth
C、one-fth
D、two-thinds
第2题:
A.agricultural
B.industrial
C.manufacturing
D.mining industry
第3题:
In Leon Nacson’s view, air and water are our Number One priorities for the following reasons except ().
A、he cannot understand why people are polluting air and water
B、there will definitely be no fresh air and clean water for future generations
C、we would run out of air and water if we didn’t stop polluting them
D、air and water polluting are the current and futu
第4题:
第5题:
A.the use of hosted email services eliminating the need for local security
B.the perceived costs of security solutions
C.the lack of risk analysis
D.the lack of threats to their network
E.the belief that free security tools are sufficient
F.the desire to avoid unnecessary technologies
第6题:
A.can use
B. can be used
C.is to use
D. is using
第7题:
A.the exhaustion of old mines
B.costly extraction
C.little money being invested
D.the labour shortage
第8题:
The reasons for the popularity of Treasury bills are the following except that ______.
A.they are the only money market instruments affordable to individual investors
B.they are highly liquid
C.they are risk-free
D.they give higher return than other money market instruments
第9题:
第10题: