What problem do some farmers have?（）

• A、They have no workers to remove fruit trees.

• B、There is little land for growing fruit.

• C、Their crops were badly damaged last year.

• D、It's difficult to harvest their crops.

在下列每組單詞中，有一個單詞的劃線部分與其他單詞的劃線部分的讀音不同。找出這個詞。

1.（）

• A、coat

• B、road 

• C、broad

• D、

  goal

51.