中国大学MOOC: "Last night, a tree outside our house was struck by lightning."is an OPINION.

The lightning rod is one of his useful _______________________.

Lightning bugs can blink themselves because of a chemical substance Why do female lightning bugs have brighter and stronger light than male lightning bugs A: Because they have different physical construction. B: Because they are more offensive than male lightning bugs. C: Because they want to frighten their enemies. D: Because they try to attract males to them.

Which of the following statements is NOT true(). A: About one person per day dies from lightning in the U.S. B: About 365 persons per year die from lightning in the U.S. C: About one person per hour dies from lightning in the U.S.

Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. Conversation 1 A: How lightning is produced. B: The loudness of thunder. C: The relationship between lightning and thunder. D: How to determine the location of a lightning flash.

A．Light rain.B．Heavy rain.C．Lightning.D．Heavy snow A: Light rain. B: Heavy rain. C: Lightning. D: Heavy snow

胎儿入盆 A: lightening B: lightning

Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it.Conversation 1 A: A. How lightning is produced. B: B. The loudness of thunder. C: C. The relationship between lightning and thunder. D: D. How to determine the location of a lightning flash.

You see the lightning ______ it happens, but you hear the thunder later.

Several trees _______ (strike)by lightning in last night's storm.