摘要：case
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The case shocked the public, a hot debate over human nature on the Intemet.
- A.causes
- B.caused
- C.causing
- D.to cause
In case of emergency, whether knowing how to apply first aid or not really ________ in matters concerning wounds like swollen wrists, broken arms, burns, cuts, and so on.
| A．makes difference | B．makes a difference |
| C．makes differences | D．makes different |