一家企业要在市场中总是占据主导地位,就要做到第一个开发出新一代产品,第一个淘汰自己现有的产品。这一经济学中的“达维多定律”启示我们,企业的成功经营必须( )
In the past, most parents couldn’t _______ their children’s education. A. cost B. take C. afford
– ______ the population of the world? – _______ about 6.5 billion. A. How many; They’re B. How much; It’s C. What’s; It’s
– Are there ______ of students in your school? – Oh, yes. There are about five ________. A. thousand; thousand B. thousands; thousand C. thousand; thousands
He has been a teacher ______ six years ago and he has been here _____ 3 years. A. for; for B. since; for C. for; since
The population of Japan is ________ than that of India. A. less B. fewer C. smaller