STEM+(STEM、STEAM、STEAMS)教育已经被明确写入下列哪些学科课程标准()
A.小学科学
B.高中信息技术
C.高中通用技术
D.以上3科均写入
A.小学科学
B.高中信息技术
C.高中通用技术
D.以上3科均写入
Which of the following is NOT the result of burning garbage?
A.The garbage burned is turned into fossil fuels.
B.The heat produced is used to boil water.
C.The steam produced is used to make electricity.
D.The steam produced is used to heat buildings.
All of the following are the results of burning garbage EXCEPT ______
A.the heat produced is used to boil water
B.the steam produced is used to make electricity
C.the garbage burned is turned into fossil fuels
D.the steam produced is used to heat buildings
It can be inferred from the passage that by 170______.
A.technology began to be more economical
B.the steam engine had been invented
C.the U. S. horse population was about 10 million
D.a national commission on agriculture had been established
To give us an idea of how large the rafflesia is, the author uses ______.
A. the size of an elephant for comparison
B. measurements
C. comparisons to other flowers
D. detailed descriptions of the flower's stem
A、职业装配
B、创造方法
C、工程设计
D、材料工具
E、安全保护
A.wood—processing industry
B.shoe—making industry
C.news—print industry
D.mineral refining industry
What is the main purpose of the passage?
A.To contrast travel by steamship and stagecoach.
B.To criticize the level of public debt in nineteenth century in Canada.
C.To describe the introduction of steamships in Canada.
D.To show how Canada surpassed the United States in transportation improvements.
Most of New Zealand's heavy machinery must be imported, but assembly (装配) plants make automobiles and trucks from imported parts. Woolen goods, carpets, clothing, shoes, furniture and electrical appliances are also manufactured. Imported petroleum (石油) is refined (精炼) at an oil refinery at Whangarei. An aluminum smelter at Blutt, near Invercargill, use hydro-electricity to refine one that is imported from Australia.
New Zealand's coal is used to generate steam, make gases, provide fuel for homes and factories and produce electricity. Sand and gravel (砂砾) used for road building and concrete (混凝土) construction, ranks second to coal. Limestone is used to make fertilizer and cement.
In the first paragraph, "sawmilling" refers to ______.
A.news-print industry
B.shoe-making industry
C.wood-processing industry
D.mineral refining industry