What happens when ice dams break?

• A、They may quickly block the river.

• B、The ice covering the river may melt fast.

• C、A larger iced am may soon be formed.

• D、The areas down the river maybe flooded.

Why can't some farmers find enough workers to pick fruit?

• A、They grow too many peach trees.

• B、People prefer well-paid construction jobs.

• C、Few people want to work in California.

• D、Theydon't want to hire workers from Mexico.

55.