因为根据后面的dream判断，fly还没有实现，所以用不定式表示将来性。这是不定式的特征。而动名词不具备将来性的特征。
百度试题 结果1 题目2. Before theinvention of planes, ___ in the sky like a bird was only adream.A. men fly B. to fly C. for flying D. flight 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目 3. The invention of planes makes is possible for people to travel faster and more easily.飞机的发明使得人们更快更容易出行变成了可能。 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
百度试题 结果1 题目Before the invention of aero-planes, ___ in the sky like a bird was only a dream. A. men fly B. to fly C. for flying D. man flys 相关知识点: 试题来源: 解析 B 反馈 收藏
Here is aletter to Scientific Americanwith an offer to contribute an article explaining what makes planes stay in the air as New Theory of Flight revealing the Secret of Flight for the first time in the history of aerodynamics as a science!
who also hired Tesla as a consultant to help develop a power system using alternating current. Tesla is also known for his high-voltage, high-frequency power experiments in New York and Colorado Springs which included patented devices and theoretical work used in the invention of radio communicatio...
Solar energy is not a new invention. In fact, humans have been using the sun’s rays for thousands of years. The ancient Egyptians, Greeks, and Romans used solar architecture to design their buildings and temples. They used clever techniques like windows, mirrors, and skylights to maximize ...
EnabletheSstotellthedifferencesbetweentwokindsofaliencreatures. EnabletheSstounderstandthefacilitiesin“Wonderworld”. 3.Learningabilitygoals学能目标 HelptheSslearnhowtopromoteanewinventionbyanalyzingdifferent situations. Teachingimportant&difficultpoints教学重难点 Listentothematerialaboutthenewinventionandfindoutitsspeci...
anditiscold.Youhavenomobilephone.Whatdoyoudo?Well,nextThisinventionmaybeabletohelpyou.Itisadevice(装置)whichusesuser’sposition(位置).Itcanfindyourpositiontowithin20metres.AGPSleastyouwillknowwhereyouare. mountain.Youhavenocarbreaksdown.Itisnight
The invention of WUS-like stem cell-promoting functions in plants predates leptosporangiate ferns. Plant Mol. Biol. 2012, 78, 123–134. [Google Scholar] [CrossRef] [PubMed] Youngstrom, C.E.; Geadelmann, L.F.; Irish, E.E.; Cheng, C.L. A fern WUSCHEL-RELATED HOMEOBOX gene ...