19.中国花了近2000亿美元用于研究和开发。
A: China spent nearly $200 billion on research and development.
B: China spent nearly $200 million on research and development.
C: China spent nearly $20 billion on research and development.
D: China spent nearly $20 million on research and development.
A: China spent nearly $200 billion on research and development.
B: China spent nearly $200 million on research and development.
C: China spent nearly $20 billion on research and development.
D: China spent nearly $20 million on research and development.
举一反三
- Under the setting of mining level in China, single level or ______ development is widely used in various mine development.
- What is China's independant research and development satellites navigation system A: GPS B: BDS C: GNSS D: GSNS
- China has already spent large amounts of money into space research and has sent 6 crews into space. A: T B: F
- He led Microsoft's research and development ______ in China, including planning, services and solutions. A: agenda B: agency C: agate D: angle
- Agricultural development simply must ________ economic development.