Spicy Mongolian Beef Salad

Ingredients

• 1/4 cup olive oil
• 2 tablespoons rice vinegar
• 1 tablespoon reduced-sodium soy sauce
• 1 tablespoon sesame oil
• 2 teaspoons minced fresh gingerroot
• 1 small garlic clove, minced
• 1 teaspoon sugar
• 
  BEEF:
  
• 1 tablespoon reduced-sodium soy sauce
• 2 garlic cloves, minced
• 2 teaspoons sugar
• 1 to 2 teaspoons crushed red pepper flakes
• 1 teaspoon sesame oil
• 1 beef top sirloin steak (1 pound), cut into 1/4-inch strips
• 1 tablespoon olive oil
• 
  SALAD:
  
• 8 cups torn mixed salad greens
• 1 cup shredded carrots
• 1/2 cup thinly sliced cucumber
• 4 radishes, thinly sliced