【单选题】Topic 26 Session 1 4-2 Read the sentence pairs. Choose which word or phrase best fits each blank. 2-B _______________________________ identifies problems.
【单选题】Topic 26 Session 1 4-3 Read the sentence pairs. Choose which word or phrase best fits each blank. 3-A Engineers use programs to ____________________ test results with expectations.
【单选题】Topic 26 Session 1 4-2 Read the sentence pairs. Choose which word or phrase best fits each blank. 2-A _______________________________ stops problems from occurring.