CBOT: Mainly soybeans, soybean meal, soybean oil, corn, wheat and rice.

What are the similarities and differences between them? This question is too shocking.

I can only tell you that the similarities are all agricultural products, but the differences are different agricultural products.

The index is for reference only and can only trade futures contracts.

The exchange rate index and the gold index of the US dollar index are only the gold price index.

You want me to be clear, only five points?