Many Chinese believe____(eat) pig brains will increase their intelligence and some Americans regularly eat____ (cook) eggs to keep their minds sharp.  ____ doctors don't recommend eating____ raw eggs or animal brains. Then, what food is good for your brain? Scientists have found a relationship  ____ diet and a healthy brain. Generally speaking, fish is ____brain food. Besides fish, you should introduce lots of dark green leafy vegetables and colorful fruits into your diet,____ most people lack the special vitamins____ these brain food provide. If you eat brain foods____(regular), they can increase brain power — help you pay attention, keep you motivated, improve your memory and ____(less) stress from studies. Then you can do much better in your test.

有些药物常被封装在用淀粉制成胶囊中服用，以避免对胃产生刺激。从淀粉在消化道内的消化特点来看，其原因是（ ）

下列句子中加线成语使用正确的一项是(     )。