Many experiments have been done to ___ their purpose.a、achieveb、teachc、proved、make

After many months' experiments,they s____ last Monday. Many experiments have been done to ___ their purpose.a、achieveb、teachc、proved、make Many of the experiments described in this book are (ease) to perform than you would expect. I hav'e hurt so many times but i have to try to make it right ,just fI hav'e hurt so many times but i have to try to make it right ,just for you hello!my friends are as many as my fingers inmy two hands .can you guess how many friends do I hav中文 英语翻译mounting empirical evidence suggests that many animal experiments are performed callously without any heed to the discomfort or pain that laboratory mammals endure. mounting empirical evidence suggests that many animal experiments are performed callously without any heed to the discomfort or pain that laboratory mammals endure.怎么翻译? 12.Many experiments(?) us of the truth of this statement.(A) have released (B) have alleviated (C) have convinced (D) have accused hav a great 英语翻译Many medical treatments and procedures have been developed from experiments on animals.Since animals share many features with humans,scientists use animals to test the safety and effectiveness of newly developed drugs before pilot testing 英语翻译1.Scientists always verify their experiments objectively and reject authority as the sole basis for truth.2.High-rise department stores are ringed with smaller buildings,many of which are apartment complexes.3.Many cities have undergone m make experiments 和 do experiments有什么区别 we do experiments怎么读 The astronaut did many experiments in the spaceship,____much help for learning about space.A.which we think it is B.which we think are ofC.of which we think is D.we think which is of 英语翻译many animal experiments are performed callouslywithout any heed to the disconmfort or painthat laboratory mammals endureheed to是怎么回事呢,如果改成heed of / heed in / heed about就好理解,to的功能本来很多,为什么还 That many of the important laws of science were discovered during experiments designed to------other phenomena suggests that experimental results are the------of inevitable natural forces rather than of planning.A.analyze … foundations B.disprove 英语翻译the microwave demonstrator consists of microwave transmitte,microwave receiver with amplifier,receiving dipole and accessories.this combination of equipment can be used to demonstrate many interesting microwave experiments 英语翻译In randomized tests there are several common ethical issues that surface.Most critics’ primary concern is that these types of experiments prevent doctors from performing their primary service to patients - healthcare.Similarly,many beli